1198380723 has 4 divisors (see below), whose sum is σ = 1597840968. Its totient is φ = 798920480.

The previous prime is 1198380713. The next prime is 1198380737. The reversal of 1198380723 is 3270838911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1198380723 - 2⁵ = 1198380691 is a prime.

It is a super-2 number, since 2×1198380723² = 2872232714516005458, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1198380713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199730118 + ... + 199730123.

It is an arithmetic number, because the mean of its divisors is an integer number (399460242).

Almost surely, 2^1198380723 is an apocalyptic number.

1198380723 is a deficient number, since it is larger than the sum of its proper divisors (399460245).

1198380723 is an equidigital number, since it uses as much as digits as its factorization.

1198380723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399460244.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 1198380723 is about 34617.6360111432. The cubic root of 1198380723 is about 1062.1803710861.

The spelling of 1198380723 in words is "one billion, one hundred ninety-eight million, three hundred eighty thousand, seven hundred twenty-three".