1390634016 has 48 divisors (see below), whose sum is σ = 3842546400. Its totient is φ = 439147008.

The previous prime is 1390634009. The next prime is 1390634029. The reversal of 1390634016 is 6104360931.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379381 + ... + 383028.

It is an arithmetic number, because the mean of its divisors is an integer number (80053050).

Almost surely, 2^1390634016 is an apocalyptic number.

1390634016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1390634016 is an abundant number, since it is smaller than the sum of its proper divisors (2451912384).

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

1390634016 is a wasteful number, since it uses less digits than its factorization.

1390634016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762441 (or 762433 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 1390634016 is about 37291.2056120475. The cubic root of 1390634016 is about 1116.1886861241.

Adding to 1390634016 its reverse (6104360931), we get a palindrome (7494994947).

The spelling of 1390634016 in words is "one billion, three hundred ninety million, six hundred thirty-four thousand, sixteen".