1397672501824 has 21 divisors (see below), whose sum is σ = 2773525138867. Its totient is φ = 698831521984.

The previous prime is 1397672501801. The next prime is 1397672501831. The reversal of 1397672501824 is 4281052767931.

The square root of 1397672501824 is 1182232.

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

It is a Duffinian number.

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, 9383967 + ... + 9531745.

It is a 1-persistent number, because it is pandigital, but 2⋅1397672501824 = 2795345003648 is not.

Almost surely, 2^{1397672501824} is an apocalyptic number.

1397672501824 is the 1182232-nd square number.

It is an amenable number.

1397672501824 is a deficient number, since it is larger than the sum of its proper divisors (1375852637043).

1397672501824 is an frugal number, since it uses more digits than its factorization.

1397672501824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295570 (or 147781 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 55.

The spelling of 1397672501824 in words is "one trillion, three hundred ninety-seven billion, six hundred seventy-two million, five hundred one thousand, eight hundred twenty-four".