1390262650 has 48 divisors (see below), whose sum is σ = 2978666496. Its totient is φ = 472893120.

The previous prime is 1390262633. The next prime is 1390262659. The reversal of 1390262650 is 562620931.

It is not an unprimeable number, because it can be changed into a prime (1390262659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28812 + ... + 60088.

It is an arithmetic number, because the mean of its divisors is an integer number (62055552).

Almost surely, 2^1390262650 is an apocalyptic number.

1390262650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1390262650 is an abundant number, since it is smaller than the sum of its proper divisors (1588403846).

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

1390262650 is a wasteful number, since it uses less digits than its factorization.

1390262650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31423 (or 31418 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 1390262650 is about 37286.2260090774. The cubic root of 1390262650 is about 1116.0893186350.

The spelling of 1390262650 in words is "one billion, three hundred ninety million, two hundred sixty-two thousand, six hundred fifty".