151868494 has 24 divisors (see below), whose sum is σ = 241209360. Its totient is φ = 71713356.

The previous prime is 151868491. The next prime is 151868557. The reversal of 151868494 is 494868151.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151868491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1922347 + ... + 1922425.

It is an arithmetic number, because the mean of its divisors is an integer number (10050390).

Almost surely, 2^151868494 is an apocalyptic number.

151868494 is a deficient number, since it is larger than the sum of its proper divisors (89340866).

151868494 is an frugal number, since it uses more digits than its factorization.

151868494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 104 counting only the distinct ones).

The product of its digits is 276480, while the sum is 46.

The square root of 151868494 is about 12323.4935793386. The cubic root of 151868494 is about 533.5263770798.

Multiplying 151868494 by its sum of digits (46), we get a square (6985950724 = 83582²).

151868494 divided by its sum of digits (46) gives a square (3301489 = 1817²).

The spelling of 151868494 in words is "one hundred fifty-one million, eight hundred sixty-eight thousand, four hundred ninety-four".