1390654608 has 40 divisors (see below), whose sum is σ = 4105743168. Its totient is φ = 397329792.

The previous prime is 1390654607. The next prime is 1390654609. The reversal of 1390654608 is 8064560931.

It is an interprime number because it is at equal distance from previous prime (1390654607) and next prime (1390654609).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 1390654608.

It is not an unprimeable number, because it can be changed into a prime (1390654607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2069091 + ... + 2069762.

Almost surely, 2^1390654608 is an apocalyptic number.

It is an amenable number.

1390654608 is an abundant number, since it is smaller than the sum of its proper divisors (2715088560).

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

1390654608 is a wasteful number, since it uses less digits than its factorization.

1390654608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4138871 (or 4138865 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 1390654608 is about 37291.4817082937. The cubic root of 1390654608 is about 1116.1941954682.

The spelling of 1390654608 in words is "one billion, three hundred ninety million, six hundred fifty-four thousand, six hundred eight".