1195720823 has 32 divisors (see below), whose sum is σ = 1451831040. Its totient is φ = 972034560.

The previous prime is 1195720819. The next prime is 1195720829. The reversal of 1195720823 is 3280275911.

It is a cyclic number.

It is not a de Polignac number, because 1195720823 - 2² = 1195720819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1195720829) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 295508 + ... + 299526.

It is an arithmetic number, because the mean of its divisors is an integer number (45369720).

Almost surely, 2^1195720823 is an apocalyptic number.

1195720823 is a deficient number, since it is larger than the sum of its proper divisors (256110217).

1195720823 is a wasteful number, since it uses less digits than its factorization.

1195720823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4127.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 1195720823 is about 34579.1963903154. The cubic root of 1195720823 is about 1061.3939247266.

The spelling of 1195720823 in words is "one billion, one hundred ninety-five million, seven hundred twenty thousand, eight hundred twenty-three".