148537669 has 6 divisors (see below), whose sum is σ = 172788774. Its totient is φ = 127317960.

The previous prime is 148537667. The next prime is 148537693. The reversal of 148537669 is 966735841.

It can be written as a sum of positive squares in only one way, i.e., 79032100 + 69505569 = 8890^2 + 8337^2 .

It is not a de Polignac number, because 148537669 - 2¹ = 148537667 is a prime.

It is a super-2 number, since 2×148537669² = 44126878223907122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 3031381 = 148537669 / (1 + 4 + 8 + 5 + 3 + 7 + 6 + 6 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148537661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1515642 + ... + 1515739.

It is an arithmetic number, because the mean of its divisors is an integer number (28798129).

Almost surely, 2^148537669 is an apocalyptic number.

It is an amenable number.

148537669 is a deficient number, since it is larger than the sum of its proper divisors (24251105).

148537669 is an equidigital number, since it uses as much as digits as its factorization.

148537669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3031395 (or 3031388 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 49.

The square root of 148537669 is about 12187.6030867435. The cubic root of 148537669 is about 529.5970225038.

It can be divided in two parts, 14853 and 7669, that added together give a palindrome (22522).

The spelling of 148537669 in words is "one hundred forty-eight million, five hundred thirty-seven thousand, six hundred sixty-nine".