1642019396 has 12 divisors (see below), whose sum is σ = 2878849260. Its totient is φ = 819491040.

The previous prime is 1642019363. The next prime is 1642019417. The reversal of 1642019396 is 6939102461.

It can be written as a sum of positive squares in 2 ways, for example, as 667705600 + 974313796 = 25840^2 + 31214^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 377231 + ... + 381558.

It is an arithmetic number, because the mean of its divisors is an integer number (239904105).

Almost surely, 2^1642019396 is an apocalyptic number.

It is an amenable number.

1642019396 is a deficient number, since it is larger than the sum of its proper divisors (1236829864).

1642019396 is a wasteful number, since it uses less digits than its factorization.

1642019396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759334 (or 759332 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 1642019396 is about 40521.8385071556. The cubic root of 1642019396 is about 1179.7575380411.

The spelling of 1642019396 in words is "one billion, six hundred forty-two million, nineteen thousand, three hundred ninety-six".