1268644774 has 16 divisors (see below), whose sum is σ = 1946151936. Its totient is φ = 619965000.

The previous prime is 1268644757. The next prime is 1268644823. The reversal of 1268644774 is 4774468621.

It is a super-2 number, since 2×1268644774² = 3218919125195022152, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61609 + ... + 79579.

It is an arithmetic number, because the mean of its divisors is an integer number (121634496).

Almost surely, 2^1268644774 is an apocalyptic number.

1268644774 is a deficient number, since it is larger than the sum of its proper divisors (677507162).

1268644774 is a wasteful number, since it uses less digits than its factorization.

1268644774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18771.

The product of its digits is 1806336, while the sum is 49.

The square root of 1268644774 is about 35618.0400078387. The cubic root of 1268644774 is about 1082.5467942159.

The spelling of 1268644774 in words is "one billion, two hundred sixty-eight million, six hundred forty-four thousand, seven hundred seventy-four".