1601918045804 has 12 divisors (see below), whose sum is σ = 2803368037344. Its totient is φ = 800955749424.

The previous prime is 1601918045771. The next prime is 1601918045867. The reversal of 1601918045804 is 4085408191061.

It is a super-2 number, since 2×1601918045804² (a number of 25 digits) contains 22 as substring.

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, 529277 + ... + 1866539.

It is an arithmetic number, because the mean of its divisors is an integer number (233614003112).

Almost surely, 2^{1601918045804} is an apocalyptic number.

It is an amenable number.

1601918045804 is a deficient number, since it is larger than the sum of its proper divisors (1201449991540).

1601918045804 is a wasteful number, since it uses less digits than its factorization.

1601918045804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636744 (or 1636742 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 47.

The spelling of 1601918045804 in words is "one trillion, six hundred one billion, nine hundred eighteen million, forty-five thousand, eight hundred four".