15198949 has 2 divisors, whose sum is σ = 15198950. Its totient is φ = 15198948.

The previous prime is 15198923. The next prime is 15198973. The reversal of 15198949 is 94989151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14212900 + 986049 = 3770^2 + 993^2 .

It is a cyclic number.

It is not a de Polignac number, because 15198949 - 2¹⁵ = 15166181 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15198899 and 15198908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15198919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7599474 + 7599475.

It is an arithmetic number, because the mean of its divisors is an integer number (7599475).

Almost surely, 2^15198949 is an apocalyptic number.

It is an amenable number.

15198949 is a deficient number, since it is larger than the sum of its proper divisors (1).

15198949 is an equidigital number, since it uses as much as digits as its factorization.

15198949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 46.

The square root of 15198949 is about 3898.5829476875. The cubic root of 15198949 is about 247.7067564567.

The spelling of 15198949 in words is "fifteen million, one hundred ninety-eight thousand, nine hundred forty-nine".