19148797 has 2 divisors, whose sum is σ = 19148798. Its totient is φ = 19148796.

The previous prime is 19148791. The next prime is 19148807. The reversal of 19148797 is 79784191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18267076 + 881721 = 4274^2 + 939^2 .

It is a cyclic number.

It is not a de Polignac number, because 19148797 - 2¹¹ = 19146749 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19148791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9574398 + 9574399.

It is an arithmetic number, because the mean of its divisors is an integer number (9574399).

Almost surely, 2^19148797 is an apocalyptic number.

It is an amenable number.

19148797 is a deficient number, since it is larger than the sum of its proper divisors (1).

19148797 is an equidigital number, since it uses as much as digits as its factorization.

19148797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 46.

The square root of 19148797 is about 4375.9338431928. The cubic root of 19148797 is about 267.5349335692.

The spelling of 19148797 in words is "nineteen million, one hundred forty-eight thousand, seven hundred ninety-seven".