195400906 has 4 divisors (see below), whose sum is σ = 293101362. Its totient is φ = 97700452.

The previous prime is 195400897. The next prime is 195400943. The reversal of 195400906 is 609004591.

195400906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 609004591 = 13 ⋅46846507.

It can be written as a sum of positive squares in only one way, i.e., 171479025 + 23921881 = 13095^2 + 4891^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48850225 + ... + 48850228.

Almost surely, 2^195400906 is an apocalyptic number.

195400906 is a deficient number, since it is larger than the sum of its proper divisors (97700456).

195400906 is an equidigital number, since it uses as much as digits as its factorization.

195400906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97700455.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 195400906 is about 13978.5874107508. The cubic root of 195400906 is about 580.2861311148.

The spelling of 195400906 in words is "one hundred ninety-five million, four hundred thousand, nine hundred six".