1983390398 has 16 divisors (see below), whose sum is σ = 3263485680. Its totient is φ = 896558400.

The previous prime is 1983390379. The next prime is 1983390401. The reversal of 1983390398 is 8930933891.

It is a congruent number.

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, 245063 + ... + 253026.

It is an arithmetic number, because the mean of its divisors is an integer number (203967855).

Almost surely, 2^1983390398 is an apocalyptic number.

1983390398 is a deficient number, since it is larger than the sum of its proper divisors (1280095282).

1983390398 is a wasteful number, since it uses less digits than its factorization.

1983390398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498283.

The product of its (nonzero) digits is 1259712, while the sum is 53.

The square root of 1983390398 is about 44535.2713924593. The cubic root of 1983390398 is about 1256.4235520792.

The spelling of 1983390398 in words is "one billion, nine hundred eighty-three million, three hundred ninety thousand, three hundred ninety-eight".