1117739961 has 24 divisors (see below), whose sum is σ = 1830221120. Its totient is φ = 651636576.

The previous prime is 1117739957. The next prime is 1117739969. The reversal of 1117739961 is 1699377111.

It is not a de Polignac number, because 1117739961 - 2² = 1117739957 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1117739969) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 249181 + ... + 253626.

Almost surely, 2^1117739961 is an apocalyptic number.

It is an amenable number.

1117739961 is a deficient number, since it is larger than the sum of its proper divisors (712481159).

1117739961 is a wasteful number, since it uses less digits than its factorization.

1117739961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502845 (or 502842 counting only the distinct ones).

The product of its digits is 71442, while the sum is 45.

The square root of 1117739961 is about 33432.6182193378. The cubic root of 1117739961 is about 1037.7998238512.

The spelling of 1117739961 in words is "one billion, one hundred seventeen million, seven hundred thirty-nine thousand, nine hundred sixty-one".