1197191996 has 48 divisors (see below), whose sum is σ = 2812992000. Its totient is φ = 430557120.

The previous prime is 1197191993. The next prime is 1197192013. The reversal of 1197191996 is 6991917911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1197191993) 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, 145496 + ... + 153503.

It is an arithmetic number, because the mean of its divisors is an integer number (58604000).

Almost surely, 2^1197191996 is an apocalyptic number.

It is an amenable number.

1197191996 is an abundant number, since it is smaller than the sum of its proper divisors (1615800004).

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

1197191996 is a wasteful number, since it uses less digits than its factorization.

1197191996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299034 (or 299032 counting only the distinct ones).

The product of its digits is 275562, while the sum is 53.

The square root of 1197191996 is about 34600.4623668528. The cubic root of 1197191996 is about 1061.8290469528.

The spelling of 1197191996 in words is "one billion, one hundred ninety-seven million, one hundred ninety-one thousand, nine hundred ninety-six".