1297772189384 has 32 divisors (see below), whose sum is σ = 2810683087200. Its totient is φ = 555196657920.

The previous prime is 1297772189359. The next prime is 1297772189387. The reversal of 1297772189384 is 4839812777921.

It is a Harshad number since it is a multiple of its sum of digits (68).

It is not an unprimeable number, because it can be changed into a prime (1297772189387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433745894 + ... + 433748885.

It is an arithmetic number, because the mean of its divisors is an integer number (87833846475).

Almost surely, 2^{1297772189384} is an apocalyptic number.

It is an amenable number.

1297772189384 is an abundant number, since it is smaller than the sum of its proper divisors (1512910897816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1297772189384 is a wasteful number, since it uses less digits than its factorization.

1297772189384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867494813 (or 867494809 counting only the distinct ones).

The product of its digits is 85349376, while the sum is 68.

The spelling of 1297772189384 in words is "one trillion, two hundred ninety-seven billion, seven hundred seventy-two million, one hundred eighty-nine thousand, three hundred eighty-four".