45681019 has 2 divisors, whose sum is σ = 45681020. Its totient is φ = 45681018.

The previous prime is 45680983. The next prime is 45681029. The reversal of 45681019 is 91018654.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45681019 - 2⁷ = 45680891 is a prime.

It is a super-2 number, since 2×45681019² = 4173510993756722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (45681029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22840509 + 22840510.

It is an arithmetic number, because the mean of its divisors is an integer number (22840510).

Almost surely, 2^45681019 is an apocalyptic number.

45681019 is a deficient number, since it is larger than the sum of its proper divisors (1).

45681019 is an equidigital number, since it uses as much as digits as its factorization.

45681019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 45681019 is about 6758.7734834066. The cubic root of 45681019 is about 357.4746593935.

The spelling of 45681019 in words is "forty-five million, six hundred eighty-one thousand, nineteen".