15189401 has 2 divisors, whose sum is σ = 15189402. Its totient is φ = 15189400.

The previous prime is 15189389. The next prime is 15189431. The reversal of 15189401 is 10498151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14258176 + 931225 = 3776^2 + 965^2 .

It is an emirp because it is prime and its reverse (10498151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15189401 - 2¹⁰ = 15188377 is a prime.

It is a Chen prime.

It is equal to p₉₈₂₁₃₆ and since 15189401 and 982136 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 (15189431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7594700 + 7594701.

It is an arithmetic number, because the mean of its divisors is an integer number (7594701).

Almost surely, 2^15189401 is an apocalyptic number.

It is an amenable number.

15189401 is a deficient number, since it is larger than the sum of its proper divisors (1).

15189401 is an equidigital number, since it uses as much as digits as its factorization.

15189401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 29.

The square root of 15189401 is about 3897.3582078121. The cubic root of 15189401 is about 247.6548756866.

The spelling of 15189401 in words is "fifteen million, one hundred eighty-nine thousand, four hundred one".