190691402 has 12 divisors (see below), whose sum is σ = 314404818. Its totient is φ = 86677800.

The previous prime is 190691399. The next prime is 190691453. The reversal of 190691402 is 204196091.

It can be written as a sum of positive squares in only one way, i.e., 136212241 + 54479161 = 11671^2 + 7381^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 393749 + ... + 394232.

Almost surely, 2^190691402 is an apocalyptic number.

190691402 is a deficient number, since it is larger than the sum of its proper divisors (123713416).

190691402 is a wasteful number, since it uses less digits than its factorization.

190691402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788005 (or 787994 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 190691402 is about 13809.1057639516. The cubic root of 190691402 is about 575.5861968921.

The spelling of 190691402 in words is "one hundred ninety million, six hundred ninety-one thousand, four hundred two".