1238964994 has 16 divisors (see below), whose sum is σ = 1895114232. Its totient is φ = 607280128.

The previous prime is 1238964973. The next prime is 1238965033. The reversal of 1238964994 is 4994698321.

It can be written as a sum of positive squares in 4 ways, for example, as 1070925625 + 168039369 = 32725^2 + 12963^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141282 + ... + 149794.

Almost surely, 2^1238964994 is an apocalyptic number.

1238964994 is a deficient number, since it is larger than the sum of its proper divisors (656149238).

1238964994 is a wasteful number, since it uses less digits than its factorization.

1238964994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9941.

The product of its digits is 3359232, while the sum is 55.

The square root of 1238964994 is about 35198.9345577391. The cubic root of 1238964994 is about 1074.0380777546.

The spelling of 1238964994 in words is "one billion, two hundred thirty-eight million, nine hundred sixty-four thousand, nine hundred ninety-four".