190706738 has 4 divisors (see below), whose sum is σ = 286060110. Its totient is φ = 95353368.

The previous prime is 190706717. The next prime is 190706767. The reversal of 190706738 is 837607091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 837607091 = 3559 ⋅235349.

It can be written as a sum of positive squares in only one way, i.e., 129663769 + 61042969 = 11387^2 + 7813^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 190706695 and 190706704.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47676683 + ... + 47676686.

Almost surely, 2^190706738 is an apocalyptic number.

190706738 is a deficient number, since it is larger than the sum of its proper divisors (95353372).

190706738 is an equidigital number, since it uses as much as digits as its factorization.

190706738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95353371.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 190706738 is about 13809.6610385628. The cubic root of 190706738 is about 575.6016266269.

The spelling of 190706738 in words is "one hundred ninety million, seven hundred six thousand, seven hundred thirty-eight".