5178992989 has 2 divisors, whose sum is σ = 5178992990. Its totient is φ = 5178992988.

The previous prime is 5178992983. The next prime is 5178992993. The reversal of 5178992989 is 9892998715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5161704025 + 17288964 = 71845^2 + 4158^2 .

It is a cyclic number.

It is not a de Polignac number, because 5178992989 - 2²⁷ = 5044775261 is a prime.

It is a super-2 number, since 2×5178992989² = 53643936760222308242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5178992983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2589496494 + 2589496495.

It is an arithmetic number, because the mean of its divisors is an integer number (2589496495).

Almost surely, 2^5178992989 is an apocalyptic number.

It is an amenable number.

5178992989 is a deficient number, since it is larger than the sum of its proper divisors (1).

5178992989 is an equidigital number, since it uses as much as digits as its factorization.

5178992989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29393280, while the sum is 67.

The square root of 5178992989 is about 71965.2206902751. The cubic root of 5178992989 is about 1730.1421012170.

The spelling of 5178992989 in words is "five billion, one hundred seventy-eight million, nine hundred ninety-two thousand, nine hundred eighty-nine".