1264902158 has 16 divisors (see below), whose sum is σ = 2132143776. Its totient is φ = 558418080.

The previous prime is 1264902151. The next prime is 1264902217. The reversal of 1264902158 is 8512094621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264902151) by changing a digit.

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, 1057013 + ... + 1058208.

It is an arithmetic number, because the mean of its divisors is an integer number (133258986).

Almost surely, 2^1264902158 is an apocalyptic number.

1264902158 is a deficient number, since it is larger than the sum of its proper divisors (867241618).

1264902158 is a wasteful number, since it uses less digits than its factorization.

1264902158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2115259.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 1264902158 is about 35565.4629943151. The cubic root of 1264902158 is about 1081.4812089208.

Adding to 1264902158 its reverse (8512094621), we get a palindrome (9776996779).

The spelling of 1264902158 in words is "one billion, two hundred sixty-four million, nine hundred two thousand, one hundred fifty-eight".