149245812 has 18 divisors (see below), whose sum is σ = 377260338. Its totient is φ = 49748592.

The previous prime is 149245793. The next prime is 149245841. The reversal of 149245812 is 218542941.

It can be written as a sum of positive squares in only one way, i.e., 136328976 + 12916836 = 11676^2 + 3594^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 4145717 = 149245812 / (1 + 4 + 9 + 2 + 4 + 5 + 8 + 1 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2072823 + ... + 2072894.

Almost surely, 2^149245812 is an apocalyptic number.

149245812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

149245812 is an abundant number, since it is smaller than the sum of its proper divisors (228014526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149245812 is a wasteful number, since it uses less digits than its factorization.

149245812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4145727 (or 4145722 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 149245812 is about 12216.6203182386. The cubic root of 149245812 is about 530.4372942525.

It can be divided in two parts, 14924 and 5812, that added together give a 4-th power (20736 = 12⁴).

The spelling of 149245812 in words is "one hundred forty-nine million, two hundred forty-five thousand, eight hundred twelve".