1369664870 has 64 divisors (see below), whose sum is σ = 2868203520. Its totient is φ = 461230848.

The previous prime is 1369664869. The next prime is 1369664887. The reversal of 1369664870 is 784669631.

It is a super-2 number, since 2×1369664870² = 3751963712224233800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1287959 + ... + 1289021.

It is an arithmetic number, because the mean of its divisors is an integer number (44815680).

Almost surely, 2^1369664870 is an apocalyptic number.

1369664870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1369664870 is an abundant number, since it is smaller than the sum of its proper divisors (1498538650).

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

1369664870 is a wasteful number, since it uses less digits than its factorization.

1369664870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The square root of 1369664870 is about 37008.9836391112. The cubic root of 1369664870 is about 1110.5499722994.

The spelling of 1369664870 in words is "one billion, three hundred sixty-nine million, six hundred sixty-four thousand, eight hundred seventy".