1873454662564 has 27 divisors (see below), whose sum is σ = 3395641236897. Its totient is φ = 904388064048.

The previous prime is 1873454662553. The next prime is 1873454662567. The reversal of 1873454662564 is 4652664543781.

The square root of 1873454662564 is 1368742.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 982394180964 + 891060481600 = 991158^2 + 943960^2 .

It is a super-2 number, since 2×1873454662564² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1873454662567) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 79375237 + ... + 79398835.

Almost surely, 2^{1873454662564} is an apocalyptic number.

1873454662564 is the 1368742-nd square number.

It is an amenable number.

1873454662564 is a deficient number, since it is larger than the sum of its proper divisors (1522186574333).

1873454662564 is an frugal number, since it uses more digits than its factorization.

1873454662564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47260 (or 23630 counting only the distinct ones).

The product of its digits is 116121600, while the sum is 61.

The spelling of 1873454662564 in words is "one trillion, eight hundred seventy-three billion, four hundred fifty-four million, six hundred sixty-two thousand, five hundred sixty-four".