151798815 has 72 divisors (see below), whose sum is σ = 313389648. Its totient is φ = 67737600.

The previous prime is 151798807. The next prime is 151798819. The reversal of 151798815 is 518897151.

It is not a de Polignac number, because 151798815 - 2³ = 151798807 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151798819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 94015 + ... + 95615.

It is an arithmetic number, because the mean of its divisors is an integer number (4352634).

Almost surely, 2^151798815 is an apocalyptic number.

151798815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

151798815 is an abundant number, since it is smaller than the sum of its proper divisors (161590833).

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

151798815 is a wasteful number, since it uses less digits than its factorization.

151798815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669 (or 1659 counting only the distinct ones).

The product of its digits is 100800, while the sum is 45.

The square root of 151798815 is about 12320.6661751709. Note that the first 3 decimals coincide. The cubic root of 151798815 is about 533.4447685986. Note that the first 3 decimals are identical.

The spelling of 151798815 in words is "one hundred fifty-one million, seven hundred ninety-eight thousand, eight hundred fifteen".