45911890 has 32 divisors (see below), whose sum is σ = 84688560. Its totient is φ = 17915904.

The previous prime is 45911867. The next prime is 45911893. The reversal of 45911890 is 9811954.

It can be written as a sum of positive squares in 8 ways, for example, as 39904489 + 6007401 = 6317^2 + 2451^2 .

It is a super-3 number, since 3×45911890³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (45911893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79282 + ... + 79858.

Almost surely, 2^45911890 is an apocalyptic number.

45911890 is a deficient number, since it is larger than the sum of its proper divisors (38776670).

45911890 is a wasteful number, since it uses less digits than its factorization.

45911890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 45911890 is about 6775.8313143112. The cubic root of 45911890 is about 358.0758710641.

The spelling of 45911890 in words is "forty-five million, nine hundred eleven thousand, eight hundred ninety".