1390557098 has 32 divisors (see below), whose sum is σ = 2434689408. Its totient is φ = 583329600.

The previous prime is 1390557089. The next prime is 1390557121. The reversal of 1390557098 is 8907550931.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176336 + ... + 184052.

It is an arithmetic number, because the mean of its divisors is an integer number (76084044).

Almost surely, 2^1390557098 is an apocalyptic number.

1390557098 is a deficient number, since it is larger than the sum of its proper divisors (1044132310).

1390557098 is a wasteful number, since it uses less digits than its factorization.

1390557098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7998.

The product of its (nonzero) digits is 340200, while the sum is 47.

The square root of 1390557098 is about 37290.1742822422. The cubic root of 1390557098 is about 1116.1681064021.

The spelling of 1390557098 in words is "one billion, three hundred ninety million, five hundred fifty-seven thousand, ninety-eight".