1920036413 has 4 divisors (see below), whose sum is σ = 1925538300. Its totient is φ = 1914534528.

The previous prime is 1920036407. The next prime is 1920036439. The reversal of 1920036413 is 3146300291.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3146300291 = 37 ⋅85035143.

It can be written as a sum of positive squares in 2 ways, for example, as 1335025444 + 585010969 = 36538^2 + 24187^2 .

It is a cyclic number.

It is not a de Polignac number, because 1920036413 - 2¹⁰ = 1920035389 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 (1920026413) 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, 2750420 + ... + 2751117.

It is an arithmetic number, because the mean of its divisors is an integer number (481384575).

Almost surely, 2^1920036413 is an apocalyptic number.

It is an amenable number.

1920036413 is a deficient number, since it is larger than the sum of its proper divisors (5501887).

1920036413 is an equidigital number, since it uses as much as digits as its factorization.

1920036413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5501886.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 1920036413 is about 43818.2201030576. The cubic root of 1920036413 is about 1242.9008595303.

The spelling of 1920036413 in words is "one billion, nine hundred twenty million, thirty-six thousand, four hundred thirteen".