1390163004 has 18 divisors (see below), whose sum is σ = 3514023240. Its totient is φ = 463387656.

The previous prime is 1390162979. The next prime is 1390163009. The reversal of 1390163004 is 4003610931.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390163009) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19307784 + ... + 19307855.

Almost surely, 2^1390163004 is an apocalyptic number.

It is an amenable number.

1390163004 is an abundant number, since it is smaller than the sum of its proper divisors (2123860236).

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

1390163004 is a wasteful number, since it uses less digits than its factorization.

1390163004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38615649 (or 38615644 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 1390163004 is about 37284.8897544300. The cubic root of 1390163004 is about 1116.0626530517.

Adding to 1390163004 its reverse (4003610931), we get a palindrome (5393773935).

The spelling of 1390163004 in words is "one billion, three hundred ninety million, one hundred sixty-three thousand, four".