1881560161478 has 8 divisors (see below), whose sum is σ = 2838107506680. Its totient is φ = 935524325920.

The previous prime is 1881560161463. The next prime is 1881560161487. The reversal of 1881560161478 is 8741610651881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1881560161478² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 2627876963 + ... + 2627877678.

It is an arithmetic number, because the mean of its divisors is an integer number (354763438335).

Almost surely, 2^{1881560161478} is an apocalyptic number.

1881560161478 is a deficient number, since it is larger than the sum of its proper divisors (956547345202).

1881560161478 is a wasteful number, since it uses less digits than its factorization.

1881560161478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5255754822.

The product of its (nonzero) digits is 2580480, while the sum is 56.

The spelling of 1881560161478 in words is "one trillion, eight hundred eighty-one billion, five hundred sixty million, one hundred sixty-one thousand, four hundred seventy-eight".