133922978 has 30 divisors (see below), whose sum is σ = 235762971. Its totient is φ = 57051876.

The previous prime is 133922903. The next prime is 133922983. The reversal of 133922978 is 879229331.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 66961489 + 66961489 = 8183^2 + 8183^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=8183.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 801851 + ... + 802017.

Almost surely, 2^133922978 is an apocalyptic number.

133922978 is a deficient number, since it is larger than the sum of its proper divisors (101839993).

133922978 is an frugal number, since it uses more digits than its factorization.

133922978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364 (or 176 counting only the distinct ones).

The product of its digits is 163296, while the sum is 44.

The square root of 133922978 is about 11572.5095808990. The cubic root of 133922978 is about 511.6249313019.

The spelling of 133922978 in words is "one hundred thirty-three million, nine hundred twenty-two thousand, nine hundred seventy-eight".