1651895402 has 16 divisors (see below), whose sum is σ = 2488097832. Its totient is φ = 822536640.

The previous prime is 1651895387. The next prime is 1651895407. The reversal of 1651895402 is 2045981561.

It can be written as a sum of positive squares in 4 ways, for example, as 1641789361 + 10106041 = 40519^2 + 3179^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1651895402.

It is not an unprimeable number, because it can be changed into a prime (1651895407) 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 7 ways as a sum of consecutive naturals, for example, 742652 + ... + 744872.

Almost surely, 2^1651895402 is an apocalyptic number.

1651895402 is a deficient number, since it is larger than the sum of its proper divisors (836202430).

1651895402 is a wasteful number, since it uses less digits than its factorization.

1651895402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3593.

The product of its (nonzero) digits is 86400, while the sum is 41.

The square root of 1651895402 is about 40643.5161126593. The cubic root of 1651895402 is about 1182.1180483582.

The spelling of 1651895402 in words is "one billion, six hundred fifty-one million, eight hundred ninety-five thousand, four hundred two".