1641795426 has 16 divisors (see below), whose sum is σ = 3648434400. Its totient is φ = 547265124.

The previous prime is 1641795401. The next prime is 1641795437. The reversal of 1641795426 is 6245971461.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15201756 + ... + 15201863.

It is an arithmetic number, because the mean of its divisors is an integer number (228027150).

Almost surely, 2^1641795426 is an apocalyptic number.

1641795426 is an abundant number, since it is smaller than the sum of its proper divisors (2006638974).

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

1641795426 is a wasteful number, since it uses less digits than its factorization.

1641795426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30403630 (or 30403624 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 1641795426 is about 40519.0748413633. The cubic root of 1641795426 is about 1179.7038963057.

The spelling of 1641795426 in words is "one billion, six hundred forty-one million, seven hundred ninety-five thousand, four hundred twenty-six".