1990798935 has 16 divisors (see below), whose sum is σ = 3216205824. Its totient is φ = 1051450272.

The previous prime is 1990798933. The next prime is 1990798937. The reversal of 1990798935 is 5398970991.

It is an interprime number because it is at equal distance from previous prime (1990798933) and next prime (1990798937).

It is not a de Polignac number, because 1990798935 - 2¹ = 1990798933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1990798933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 642727 + ... + 645816.

It is an arithmetic number, because the mean of its divisors is an integer number (201012864).

Almost surely, 2^1990798935 is an apocalyptic number.

1990798935 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1990798935 is a deficient number, since it is larger than the sum of its proper divisors (1225406889).

1990798935 is a wasteful number, since it uses less digits than its factorization.

1990798935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288654.

The product of its (nonzero) digits is 5511240, while the sum is 60.

The square root of 1990798935 is about 44618.3699276430. The cubic root of 1990798935 is about 1257.9859768194.

The spelling of 1990798935 in words is "one billion, nine hundred ninety million, seven hundred ninety-eight thousand, nine hundred thirty-five".