1264419963 has 40 divisors (see below), whose sum is σ = 1989681408. Its totient is φ = 798635376.

The previous prime is 1264419953. The next prime is 1264419979. The reversal of 1264419963 is 3699144621.

It is a de Polignac number, because none of the positive numbers 2^k-1264419963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1264419943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 196170 + ... + 202512.

Almost surely, 2^1264419963 is an apocalyptic number.

1264419963 is a deficient number, since it is larger than the sum of its proper divisors (725261445).

1264419963 is a wasteful number, since it uses less digits than its factorization.

1264419963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6485 (or 6476 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 1264419963 is about 35558.6833698887. The cubic root of 1264419963 is about 1081.3437671675.

The spelling of 1264419963 in words is "one billion, two hundred sixty-four million, four hundred nineteen thousand, nine hundred sixty-three".