1394643500 has 48 divisors (see below), whose sum is σ = 3144191232. Its totient is φ = 539856000.

The previous prime is 1394643493. The next prime is 1394643511. The reversal of 1394643500 is 53464931.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29489 + ... + 60488.

It is an arithmetic number, because the mean of its divisors is an integer number (65503984).

Almost surely, 2^1394643500 is an apocalyptic number.

1394643500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1394643500 is an abundant number, since it is smaller than the sum of its proper divisors (1749547732).

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

1394643500 is a wasteful number, since it uses less digits than its factorization.

1394643500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90027 (or 90015 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 1394643500 is about 37344.9260275074. The cubic root of 1394643500 is about 1117.2603906832.

The spelling of 1394643500 in words is "one billion, three hundred ninety-four million, six hundred forty-three thousand, five hundred".