15138733 has 2 divisors, whose sum is σ = 15138734. Its totient is φ = 15138732.

The previous prime is 15138731. The next prime is 15138769. The reversal of 15138733 is 33783151.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14645929 + 492804 = 3827^2 + 702^2 .

It is an emirp because it is prime and its reverse (33783151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15138733 - 2¹ = 15138731 is a prime.

Together with 15138731, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 15138695 and 15138704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15138731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7569366 + 7569367.

It is an arithmetic number, because the mean of its divisors is an integer number (7569367).

Almost surely, 2^15138733 is an apocalyptic number.

It is an amenable number.

15138733 is a deficient number, since it is larger than the sum of its proper divisors (1).

15138733 is an equidigital number, since it uses as much as digits as its factorization.

15138733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 31.

The square root of 15138733 is about 3890.8524772857. The cubic root of 15138733 is about 247.3791975855.

The spelling of 15138733 in words is "fifteen million, one hundred thirty-eight thousand, seven hundred thirty-three".