149891140 has 48 divisors (see below), whose sum is σ = 372153600. Its totient is φ = 49617792.

The previous prime is 149891129. The next prime is 149891141. The reversal of 149891140 is 41198941.

It is a self number, because there is not a number n which added to its sum of digits gives 149891140.

It is not an unprimeable number, because it can be changed into a prime (149891141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14400 + ... + 22519.

It is an arithmetic number, because the mean of its divisors is an integer number (7753200).

Almost surely, 2^149891140 is an apocalyptic number.

149891140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149891140 is an abundant number, since it is smaller than the sum of its proper divisors (222262460).

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

149891140 is a wasteful number, since it uses less digits than its factorization.

149891140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36964 (or 36962 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 149891140 is about 12243.0037164088. The cubic root of 149891140 is about 531.2007190272.

It can be divided in two parts, 14989 and 1140, that added together give a square (16129 = 127²).

The spelling of 149891140 in words is "one hundred forty-nine million, eight hundred ninety-one thousand, one hundred forty".