190260643 has 2 divisors, whose sum is σ = 190260644. Its totient is φ = 190260642.

The previous prime is 190260571. The next prime is 190260667. The reversal of 190260643 is 346062091.

It is a strong prime.

It is an emirp because it is prime and its reverse (346062091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 190260643 - 2²¹ = 188163491 is a prime.

It is a super-2 number, since 2×190260643² = 72398224549546898, which contains 22 as substring.

It is the 13794-th Hogben number.

It is equal to p_10569172 and since 190260643 and 10569172 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (190260043) by changing a digit.

It is a nontrivial repunit in base 13793.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95130321 + 95130322.

It is an arithmetic number, because the mean of its divisors is an integer number (95130322).

Almost surely, 2^190260643 is an apocalyptic number.

190260643 is a deficient number, since it is larger than the sum of its proper divisors (1).

190260643 is an equidigital number, since it uses as much as digits as its factorization.

190260643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 190260643 is about 13793.5000271867. The cubic root of 190260643 is about 575.1524666888.

The spelling of 190260643 in words is "one hundred ninety million, two hundred sixty thousand, six hundred forty-three".