45981938 has 8 divisors (see below), whose sum is σ = 72603120. Its totient is φ = 21780900.

The previous prime is 45981937. The next prime is 45981941. The reversal of 45981938 is 83918954.

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

It is a super-2 number, since 2×45981938² = 4228677244471688, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 45981892 and 45981901.

It is not an unprimeable number, because it can be changed into a prime (45981937) 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, 604988 + ... + 605063.

It is an arithmetic number, because the mean of its divisors is an integer number (9075390).

Almost surely, 2^45981938 is an apocalyptic number.

45981938 is a deficient number, since it is larger than the sum of its proper divisors (26621182).

45981938 is a wasteful number, since it uses less digits than its factorization.

45981938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210072.

The product of its digits is 311040, while the sum is 47.

The square root of 45981938 is about 6780.9983040847. The cubic root of 45981938 is about 358.2578845777.

The spelling of 45981938 in words is "forty-five million, nine hundred eighty-one thousand, nine hundred thirty-eight".