1197981722 has 32 divisors (see below), whose sum is σ = 2101904640. Its totient is φ = 501500160.

The previous prime is 1197981709. The next prime is 1197981727. The reversal of 1197981722 is 2271897911.

It is not an unprimeable number, because it can be changed into a prime (1197981727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102818 + ... + 113874.

It is an arithmetic number, because the mean of its divisors is an integer number (65684520).

Almost surely, 2^1197981722 is an apocalyptic number.

1197981722 is a deficient number, since it is larger than the sum of its proper divisors (903922918).

1197981722 is a wasteful number, since it uses less digits than its factorization.

1197981722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11246.

The product of its digits is 127008, while the sum is 47.

The square root of 1197981722 is about 34611.8725584156. The cubic root of 1197981722 is about 1062.0624736414.

The spelling of 1197981722 in words is "one billion, one hundred ninety-seven million, nine hundred eighty-one thousand, seven hundred twenty-two".