1264691004 has 24 divisors (see below), whose sum is σ = 3046138368. Its totient is φ = 407964720.

The previous prime is 1264690937. The next prime is 1264691009. The reversal of 1264691004 is 4001964621.

1264691004 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264691009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1699482 + ... + 1700225.

It is an arithmetic number, because the mean of its divisors is an integer number (126922432).

Almost surely, 2^1264691004 is an apocalyptic number.

It is an amenable number.

1264691004 is an abundant number, since it is smaller than the sum of its proper divisors (1781447364).

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

1264691004 is a wasteful number, since it uses less digits than its factorization.

1264691004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3399745 (or 3399743 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 1264691004 is about 35562.4943444635. The cubic root of 1264691004 is about 1081.4210272459.

The spelling of 1264691004 in words is "one billion, two hundred sixty-four million, six hundred ninety-one thousand, four".