1264031994 has 16 divisors (see below), whose sum is σ = 2529996480. Its totient is φ = 421021920.

The previous prime is 1264031987. The next prime is 1264032001. The reversal of 1264031994 is 4991304621.

It is an interprime number because it is at equal distance from previous prime (1264031987) and next prime (1264032001).

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, 71947 + ... + 87774.

It is an arithmetic number, because the mean of its divisors is an integer number (158124780).

Almost surely, 2^1264031994 is an apocalyptic number.

1264031994 is an abundant number, since it is smaller than the sum of its proper divisors (1265964486).

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

1264031994 is a wasteful number, since it uses less digits than its factorization.

1264031994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161045.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 1264031994 is about 35553.2276171939. The cubic root of 1264031994 is about 1081.2331576157.

The spelling of 1264031994 in words is "one billion, two hundred sixty-four million, thirty-one thousand, nine hundred ninety-four".