1990245944 has 16 divisors (see below), whose sum is σ = 3822729120. Its totient is φ = 970851520.

The previous prime is 1990245941. The next prime is 1990245967. The reversal of 1990245944 is 4495420991.

It is a super-2 number, since 2×1990245944² = 7922157835216902272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1990245941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3033584 + ... + 3034239.

It is an arithmetic number, because the mean of its divisors is an integer number (238920570).

Almost surely, 2^1990245944 is an apocalyptic number.

It is an amenable number.

1990245944 is a deficient number, since it is larger than the sum of its proper divisors (1832483176).

1990245944 is a wasteful number, since it uses less digits than its factorization.

1990245944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6067870 (or 6067866 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 1990245944 is about 44612.1725989668. The cubic root of 1990245944 is about 1257.8694876833.

The spelling of 1990245944 in words is "one billion, nine hundred ninety million, two hundred forty-five thousand, nine hundred forty-four".