18951029 has 2 divisors, whose sum is σ = 18951030. Its totient is φ = 18951028.

The previous prime is 18950989. The next prime is 18951043. The reversal of 18951029 is 92015981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11122225 + 7828804 = 3335^2 + 2798^2 .

It is an emirp because it is prime and its reverse (92015981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18951029 - 2⁸ = 18950773 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18951029.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18951059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9475514 + 9475515.

It is an arithmetic number, because the mean of its divisors is an integer number (9475515).

Almost surely, 2^18951029 is an apocalyptic number.

It is an amenable number.

18951029 is a deficient number, since it is larger than the sum of its proper divisors (1).

18951029 is an equidigital number, since it uses as much as digits as its factorization.

18951029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 18951029 is about 4353.2779603421. The cubic root of 18951029 is about 266.6107144762.

The spelling of 18951029 in words is "eighteen million, nine hundred fifty-one thousand, twenty-nine".