1197644951 has 8 divisors (see below), whose sum is σ = 1268401680. Its totient is φ = 1126922368.

The previous prime is 1197644939. The next prime is 1197644957. The reversal of 1197644951 is 1594467911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1197644951 - 2⁶ = 1197644887 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1197644896 and 1197644905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1197644957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114305 + ... + 124341.

It is an arithmetic number, because the mean of its divisors is an integer number (158550210).

Almost surely, 2^1197644951 is an apocalyptic number.

1197644951 is a deficient number, since it is larger than the sum of its proper divisors (70756729).

1197644951 is a wasteful number, since it uses less digits than its factorization.

1197644951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17073.

The product of its digits is 272160, while the sum is 47.

The square root of 1197644951 is about 34607.0072528672. The cubic root of 1197644951 is about 1061.9629436415.

The spelling of 1197644951 in words is "one billion, one hundred ninety-seven million, six hundred forty-four thousand, nine hundred fifty-one".