1013455789 has 8 divisors (see below), whose sum is σ = 1041377688. Its totient is φ = 985561920.

The previous prime is 1013455733. The next prime is 1013455819. The reversal of 1013455789 is 9875543101.

It can be written as a sum of positive squares in 4 ways, for example, as 37393225 + 976062564 = 6115^2 + 31242^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1013455789 is a prime.

It is a super-2 number, since 2×1013455789² = 2054185272515225042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013455189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81399 + ... + 93019.

It is an arithmetic number, because the mean of its divisors is an integer number (130172211).

Almost surely, 2^1013455789 is an apocalyptic number.

It is an amenable number.

1013455789 is a deficient number, since it is larger than the sum of its proper divisors (27921899).

1013455789 is a wasteful number, since it uses less digits than its factorization.

1013455789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14015.

The product of its (nonzero) digits is 151200, while the sum is 43.

The square root of 1013455789 is about 31834.8203858605. The cubic root of 1013455789 is about 1004.4652944677.

The spelling of 1013455789 in words is "one billion, thirteen million, four hundred fifty-five thousand, seven hundred eighty-nine".