465123978 has 64 divisors (see below), whose sum is σ = 1193927040. Its totient is φ = 132652800.

The previous prime is 465123977. The next prime is 465123979. The reversal of 465123978 is 879321564.

465123978 is a `hidden beast` number, since 46 + 512 + 3 + 97 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (465123977) and next prime (465123979).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (465123977) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12933 + ... + 33128.

It is an arithmetic number, because the mean of its divisors is an integer number (18655110).

Almost surely, 2^465123978 is an apocalyptic number.

465123978 is an abundant number, since it is smaller than the sum of its proper divisors (728803062).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

465123978 is a wasteful number, since it uses less digits than its factorization.

465123978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46100 (or 46094 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 465123978 is about 21566.7331323036. The cubic root of 465123978 is about 774.7999361491.

The spelling of 465123978 in words is "four hundred sixty-five million, one hundred twenty-three thousand, nine hundred seventy-eight".