149571629 has 4 divisors (see below), whose sum is σ = 157443840. Its totient is φ = 141699420.

The previous prime is 149571619. The next prime is 149571637. The reversal of 149571629 is 926175941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 926175941 = 13297 ⋅69653.

It is a cyclic number.

It is not a de Polignac number, because 149571629 - 2⁴ = 149571613 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 149571629.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149571619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3936077 + ... + 3936114.

It is an arithmetic number, because the mean of its divisors is an integer number (39360960).

Almost surely, 2^149571629 is an apocalyptic number.

149571629 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

149571629 is a deficient number, since it is larger than the sum of its proper divisors (7872211).

149571629 is an equidigital number, since it uses as much as digits as its factorization.

149571629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7872210.

The product of its digits is 136080, while the sum is 44.

The square root of 149571629 is about 12229.9480375020. The cubic root of 149571629 is about 530.8230111076.

The spelling of 149571629 in words is "one hundred forty-nine million, five hundred seventy-one thousand, six hundred twenty-nine".