1978611410 has 8 divisors (see below), whose sum is σ = 3561500556. Its totient is φ = 791444560.

The previous prime is 1978611377. The next prime is 1978611413. The reversal of 1978611410 is 141168791.

It can be written as a sum of positive squares in 2 ways, for example, as 1977314089 + 1297321 = 44467^2 + 1139^2 .

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

It is a super-2 number, since 2×1978611410² = 7829806223564376200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1978611413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98930561 + ... + 98930580.

Almost surely, 2^1978611410 is an apocalyptic number.

1978611410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1978611410 is a deficient number, since it is larger than the sum of its proper divisors (1582889146).

1978611410 is a wasteful number, since it uses less digits than its factorization.

1978611410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197861148.

The product of its (nonzero) digits is 12096, while the sum is 38.

The square root of 1978611410 is about 44481.5850661822. The cubic root of 1978611410 is about 1255.4136211179.

The spelling of 1978611410 in words is "one billion, nine hundred seventy-eight million, six hundred eleven thousand, four hundred ten".