1396373664 has 192 divisors, whose sum is σ = 4393267200. Its totient is φ = 379911168.

The previous prime is 1396373623. The next prime is 1396373689. The reversal of 1396373664 is 4663736931.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 1539099 + ... + 1540005.

It is an arithmetic number, because the mean of its divisors is an integer number (22881600).

Almost surely, 2^1396373664 is an apocalyptic number.

1396373664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1396373664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2196633600).

1396373664 is an abundant number, since it is smaller than the sum of its proper divisors (2996893536).

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

1396373664 is a wasteful number, since it uses less digits than its factorization.

1396373664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035 (or 1027 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 48.

The square root of 1396373664 is about 37368.0834938052. The cubic root of 1396373664 is about 1117.7222159677.

The spelling of 1396373664 in words is "one billion, three hundred ninety-six million, three hundred seventy-three thousand, six hundred sixty-four".