151281990 has 48 divisors (see below), whose sum is σ = 414039600. Its totient is φ = 38218176.

The previous prime is 151281983. The next prime is 151282039. The reversal of 151281990 is 99182151.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42525 + ... + 45944.

It is an arithmetic number, because the mean of its divisors is an integer number (8625825).

Almost surely, 2^151281990 is an apocalyptic number.

151281990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

151281990 is an abundant number, since it is smaller than the sum of its proper divisors (262757610).

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

151281990 is a wasteful number, since it uses less digits than its factorization.

151281990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88501 (or 88498 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 36.

The square root of 151281990 is about 12299.6743859340. The cubic root of 151281990 is about 532.8386789481.

The spelling of 151281990 in words is "one hundred fifty-one million, two hundred eighty-one thousand, nine hundred ninety".