151851994 has 16 divisors (see below), whose sum is σ = 261072000. Its totient is φ = 64890864.

The previous prime is 151851989. The next prime is 151852021. The reversal of 151851994 is 499158151.

It is a self number, because there is not a number n which added to its sum of digits gives 151851994.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10654 + ... + 20425.

It is an arithmetic number, because the mean of its divisors is an integer number (16317000).

Almost surely, 2^151851994 is an apocalyptic number.

151851994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

151851994 is a deficient number, since it is larger than the sum of its proper divisors (109220006).

151851994 is a wasteful number, since it uses less digits than its factorization.

151851994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31437.

The product of its digits is 64800, while the sum is 43.

The square root of 151851994 is about 12322.8241081337. The cubic root of 151851994 is about 533.5070544325.

The spelling of 151851994 in words is "one hundred fifty-one million, eight hundred fifty-one thousand, nine hundred ninety-four".