1949039802 has 24 divisors (see below), whose sum is σ = 4223940084. Its totient is φ = 649522944.

The previous prime is 1949039797. The next prime is 1949039819. The reversal of 1949039802 is 2089309491.

It can be written as a sum of positive squares in 2 ways, for example, as 1754688321 + 194351481 = 41889^2 + 13941^2 .

It is a super-2 number, since 2×1949039802² = 7597512299560398408, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82248 + ... + 103260.

Almost surely, 2^1949039802 is an apocalyptic number.

1949039802 is an abundant number, since it is smaller than the sum of its proper divisors (2274900282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1949039802 is a wasteful number, since it uses less digits than its factorization.

1949039802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26174 (or 26171 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 1949039802 is about 44147.9308914925. The cubic root of 1949039802 is about 1249.1278827641.

The spelling of 1949039802 in words is "one billion, nine hundred forty-nine million, thirty-nine thousand, eight hundred two".