149901885 has 24 divisors (see below), whose sum is σ = 296949120. Its totient is φ = 68526432.

The previous prime is 149901881. The next prime is 149901889. The reversal of 149901885 is 588109941.

It is an interprime number because it is at equal distance from previous prime (149901881) and next prime (149901889).

It is not a de Polignac number, because 149901885 - 2² = 149901881 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 149901885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149901881) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 237625 + ... + 238254.

It is an arithmetic number, because the mean of its divisors is an integer number (12372880).

Almost surely, 2^149901885 is an apocalyptic number.

149901885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

149901885 is a deficient number, since it is larger than the sum of its proper divisors (147047235).

149901885 is a wasteful number, since it uses less digits than its factorization.

149901885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475897 (or 475894 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 45.

The square root of 149901885 is about 12243.4425305957. The cubic root of 149901885 is about 531.2134118285.

The spelling of 149901885 in words is "one hundred forty-nine million, nine hundred one thousand, eight hundred eighty-five".