1513913789 has 4 divisors (see below), whose sum is σ = 1528062624. Its totient is φ = 1499764956.

The previous prime is 1513913747. The next prime is 1513913803. The reversal of 1513913789 is 9873193151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9873193151 = 4993 ⋅1977407.

It is a cyclic number.

It is not a de Polignac number, because 1513913789 - 2¹² = 1513909693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1513913729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7074257 + ... + 7074470.

It is an arithmetic number, because the mean of its divisors is an integer number (382015656).

Almost surely, 2^1513913789 is an apocalyptic number.

It is an amenable number.

1513913789 is a deficient number, since it is larger than the sum of its proper divisors (14148835).

1513913789 is a wasteful number, since it uses less digits than its factorization.

1513913789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14148834.

The product of its digits is 204120, while the sum is 47.

The square root of 1513913789 is about 38909.0450795185. The cubic root of 1513913789 is about 1148.2427576987.

The spelling of 1513913789 in words is "one billion, five hundred thirteen million, nine hundred thirteen thousand, seven hundred eighty-nine".