1942798990 has 24 divisors (see below), whose sum is σ = 3843854280. Its totient is φ = 706471920.

The previous prime is 1942798987. The next prime is 1942798993. The reversal of 1942798990 is 998972491.

It is an interprime number because it is at equal distance from previous prime (1942798987) and next prime (1942798993).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1942798993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 801600 + ... + 804019.

It is an arithmetic number, because the mean of its divisors is an integer number (160160595).

Almost surely, 2^1942798990 is an apocalyptic number.

1942798990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1942798990 is a deficient number, since it is larger than the sum of its proper divisors (1901055290).

1942798990 is a wasteful number, since it uses less digits than its factorization.

1942798990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605648 (or 1605637 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 58.

The square root of 1942798990 is about 44077.1935358866. The cubic root of 1942798990 is about 1247.7932242720.

The spelling of 1942798990 in words is "one billion, nine hundred forty-two million, seven hundred ninety-eight thousand, nine hundred ninety".