1957981114 has 4 divisors (see below), whose sum is σ = 2936971674. Its totient is φ = 978990556.

The previous prime is 1957981097. The next prime is 1957981127. The reversal of 1957981114 is 4111897591.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4111897591 = 1193 ⋅3446687.

It can be written as a sum of positive squares in only one way, i.e., 1348138089 + 609843025 = 36717^2 + 24695^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489495277 + ... + 489495280.

Almost surely, 2^1957981114 is an apocalyptic number.

1957981114 is a deficient number, since it is larger than the sum of its proper divisors (978990560).

1957981114 is an equidigital number, since it uses as much as digits as its factorization.

1957981114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978990559.

The product of its digits is 90720, while the sum is 46.

The square root of 1957981114 is about 44249.0803746247. The cubic root of 1957981114 is about 1251.0351135820.

The spelling of 1957981114 in words is "one billion, nine hundred fifty-seven million, nine hundred eighty-one thousand, one hundred fourteen".