268951491 has 24 divisors (see below), whose sum is σ = 395151120. Its totient is φ = 176242176.

The previous prime is 268951429. The next prime is 268951499. The reversal of 268951491 is 194159862.

It is not a de Polignac number, because 268951491 - 2⁷ = 268951363 is a prime.

It is a super-2 number, since 2×268951491² = 144669809022246162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (268951499) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 274795 + ... + 275771.

It is an arithmetic number, because the mean of its divisors is an integer number (16464630).

Almost surely, 2^268951491 is an apocalyptic number.

268951491 is a deficient number, since it is larger than the sum of its proper divisors (126199629).

268951491 is a wasteful number, since it uses less digits than its factorization.

268951491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475 (or 1472 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 268951491 is about 16399.7405772165. The cubic root of 268951491 is about 645.4926756799.

The spelling of 268951491 in words is "two hundred sixty-eight million, nine hundred fifty-one thousand, four hundred ninety-one".