190653421 has 16 divisors (see below), whose sum is σ = 220411264. Its totient is φ = 161538624.

The previous prime is 190653409. The next prime is 190653433. The reversal of 190653421 is 124356091.

It is an interprime number because it is at equal distance from previous prime (190653409) and next prime (190653433).

It is a cyclic number.

It is not a de Polignac number, because 190653421 - 2⁷ = 190653293 is a prime.

It is a super-5 number, since 5×190653421⁵ (a number of 43 digits) contains 55555 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190653401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310711 + ... + 311323.

It is an arithmetic number, because the mean of its divisors is an integer number (13775704).

Almost surely, 2^190653421 is an apocalyptic number.

It is an amenable number.

190653421 is a deficient number, since it is larger than the sum of its proper divisors (29757843).

190653421 is a wasteful number, since it uses less digits than its factorization.

190653421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 190653421 is about 13807.7304796987. The cubic root of 190653421 is about 575.5479801875.

The spelling of 190653421 in words is "one hundred ninety million, six hundred fifty-three thousand, four hundred twenty-one".