151870491 has 32 divisors (see below), whose sum is σ = 229824000. Its totient is φ = 99096480.

The previous prime is 151870429. The next prime is 151870501. The reversal of 151870491 is 194078151.

It is not a de Polignac number, because 151870491 - 2⁹ = 151869979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (151870091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 434985 + ... + 435333.

It is an arithmetic number, because the mean of its divisors is an integer number (7182000).

Almost surely, 2^151870491 is an apocalyptic number.

151870491 is a deficient number, since it is larger than the sum of its proper divisors (77953509).

151870491 is a wasteful number, since it uses less digits than its factorization.

151870491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656 (or 650 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The square root of 151870491 is about 12323.5746031742. The cubic root of 151870491 is about 533.5287156108.

The spelling of 151870491 in words is "one hundred fifty-one million, eight hundred seventy thousand, four hundred ninety-one".