1899396402 has 32 divisors (see below), whose sum is σ = 3898782720. Its totient is φ = 616682640.

The previous prime is 1899396361. The next prime is 1899396407. The reversal of 1899396402 is 2046939981.

It is not an unprimeable number, because it can be changed into a prime (1899396407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8499 + ... + 62217.

It is an arithmetic number, because the mean of its divisors is an integer number (121836960).

Almost surely, 2^1899396402 is an apocalyptic number.

1899396402 is an abundant number, since it is smaller than the sum of its proper divisors (1999386318).

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

1899396402 is a wasteful number, since it uses less digits than its factorization.

1899396402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53878.

The product of its (nonzero) digits is 839808, while the sum is 51.

The square root of 1899396402 is about 43582.0651415235. The cubic root of 1899396402 is about 1238.4311589416.

The spelling of 1899396402 in words is "one billion, eight hundred ninety-nine million, three hundred ninety-six thousand, four hundred two".