1055390491684 has 27 divisors (see below), whose sum is σ = 1865412898587. Its totient is φ = 522467204184.

The previous prime is 1055390491637. The next prime is 1055390491711. The reversal of 1055390491684 is 4861940935501.

The square root of 1055390491684 is 1027322.

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

1055390491684 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1055390491684² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 211625839 + ... + 211630825.

Almost surely, 2^{1055390491684} is an apocalyptic number.

1055390491684 is the 1027322-nd square number.

It is an amenable number.

1055390491684 is a deficient number, since it is larger than the sum of its proper divisors (810022406903).

1055390491684 is an frugal number, since it uses more digits than its factorization.

1055390491684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10184 (or 5092 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 55.

The spelling of 1055390491684 in words is "one trillion, fifty-five billion, three hundred ninety million, four hundred ninety-one thousand, six hundred eighty-four".