1613869929 has 27 divisors (see below), whose sum is σ = 2713158903. Its totient is φ = 921729312.

The previous prime is 1613869927. The next prime is 1613869949. The reversal of 1613869929 is 9299683161.

The square root of 1613869929 is 40173.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1405125225 + 208744704 = 37485^2 + 14448^2 .

It is not a de Polignac number, because 1613869929 - 2¹ = 1613869927 is a prime.

It is a super-2 number, since 2×1613869929² = 5209152295460930082, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1613869927) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 842677 + ... + 844589.

Almost surely, 2^1613869929 is an apocalyptic number.

1613869929 is the 40173-rd square number.

1613869929 is the 20087-th centered octagonal number.

It is an amenable number.

1613869929 is a deficient number, since it is larger than the sum of its proper divisors (1099288974).

1613869929 is an frugal number, since it uses more digits than its factorization.

1613869929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3846 (or 1923 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 54.

The cubic root of 1613869929 is about 1172.9770361563.

The spelling of 1613869929 in words is "one billion, six hundred thirteen million, eight hundred sixty-nine thousand, nine hundred twenty-nine".