190840651 has 6 divisors (see below), whose sum is σ = 194512220. Its totient is φ = 187237128.

The previous prime is 190840621. The next prime is 190840667. The reversal of 190840651 is 156048091.

It is not a de Polignac number, because 190840651 - 2¹⁷ = 190709579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190840621) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31161 + ... + 36778.

Almost surely, 2^190840651 is an apocalyptic number.

190840651 is a deficient number, since it is larger than the sum of its proper divisors (3671569).

190840651 is an frugal number, since it uses more digits than its factorization.

190840651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68045 (or 67992 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 190840651 is about 13814.5087136677. The cubic root of 190840651 is about 575.7363229791.

The spelling of 190840651 in words is "one hundred ninety million, eight hundred forty thousand, six hundred fifty-one".