1197171938 has 4 divisors (see below), whose sum is σ = 1795757910. Its totient is φ = 598585968.

The previous prime is 1197171929. The next prime is 1197171947. The reversal of 1197171938 is 8391717911.

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

It is an interprime number because it is at equal distance from previous prime (1197171929) and next prime (1197171947).

It can be written as a sum of positive squares in only one way, i.e., 1184942929 + 12229009 = 34423^2 + 3497^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1197171892 and 1197171901.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 299292983 + ... + 299292986.

Almost surely, 2^1197171938 is an apocalyptic number.

1197171938 is a deficient number, since it is larger than the sum of its proper divisors (598585972).

1197171938 is an equidigital number, since it uses as much as digits as its factorization.

1197171938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598585971.

The product of its digits is 95256, while the sum is 47.

The square root of 1197171938 is about 34600.1725140208. The cubic root of 1197171938 is about 1061.8231168859.

The spelling of 1197171938 in words is "one billion, one hundred ninety-seven million, one hundred seventy-one thousand, nine hundred thirty-eight".