45189139 has 2 divisors, whose sum is σ = 45189140. Its totient is φ = 45189138.

The previous prime is 45189107. The next prime is 45189143. The reversal of 45189139 is 93198154.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45189139 - 2⁵ = 45189107 is a prime.

It is a super-2 number, since 2×45189139² = 4084116567122642, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45189149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22594569 + 22594570.

It is an arithmetic number, because the mean of its divisors is an integer number (22594570).

Almost surely, 2^45189139 is an apocalyptic number.

45189139 is a deficient number, since it is larger than the sum of its proper divisors (1).

45189139 is an equidigital number, since it uses as much as digits as its factorization.

45189139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 40.

The square root of 45189139 is about 6722.2867389007. The cubic root of 45189139 is about 356.1869651887.

The spelling of 45189139 in words is "forty-five million, one hundred eighty-nine thousand, one hundred thirty-nine".