1671502493956 has 9 divisors (see below), whose sum is σ = 2925133889461. Its totient is φ = 835749954112.

The previous prime is 1671502493933. The next prime is 1671502493977. The reversal of 1671502493956 is 6593942051761.

The square root of 1671502493956 is 1292866.

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., 92921328900 + 1578581165056 = 304830^2 + 1256416^2 .

It is a super-2 number, since 2×1671502493956² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1671502493956.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2262516 + ... + 2908948.

Almost surely, 2^{1671502493956} is an apocalyptic number.

1671502493956 is the 1292866-th square number.

It is an amenable number.

1671502493956 is a deficient number, since it is larger than the sum of its proper divisors (1253631395505).

1671502493956 is an frugal number, since it uses more digits than its factorization.

1671502493956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292870 (or 646435 counting only the distinct ones).

The product of its (nonzero) digits is 12247200, while the sum is 58.

The spelling of 1671502493956 in words is "one trillion, six hundred seventy-one billion, five hundred two million, four hundred ninety-three thousand, nine hundred fifty-six".