1949940202 has 12 divisors (see below), whose sum is σ = 3402446850. Its totient is φ = 835688616.

The previous prime is 1949940199. The next prime is 1949940211. The reversal of 1949940202 is 2020499491.

It can be written as a sum of positive squares in only one way, i.e., 1326489241 + 623450961 = 36421^2 + 24969^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9948577 + ... + 9948772.

Almost surely, 2^1949940202 is an apocalyptic number.

1949940202 is a deficient number, since it is larger than the sum of its proper divisors (1452506648).

1949940202 is a wasteful number, since it uses less digits than its factorization.

1949940202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19897365 (or 19897358 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 1949940202 is about 44158.1272474275. The cubic root of 1949940202 is about 1249.3202067986.

The spelling of 1949940202 in words is "one billion, nine hundred forty-nine million, nine hundred forty thousand, two hundred two".