1919436013 has 16 divisors (see below), whose sum is σ = 2153188224. Its totient is φ = 1695677760.

The previous prime is 1919436011. The next prime is 1919436019. The reversal of 1919436013 is 3106349191.

It is a cyclic number.

It is not a de Polignac number, because 1919436013 - 2¹ = 1919436011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1919436011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 391131 + ... + 396007.

It is an arithmetic number, because the mean of its divisors is an integer number (134574264).

Almost surely, 2^1919436013 is an apocalyptic number.

It is an amenable number.

1919436013 is a deficient number, since it is larger than the sum of its proper divisors (233752211).

1919436013 is a wasteful number, since it uses less digits than its factorization.

1919436013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5892.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 1919436013 is about 43811.3685360318. The cubic root of 1919436013 is about 1242.7712933290.

The spelling of 1919436013 in words is "one billion, nine hundred nineteen million, four hundred thirty-six thousand, thirteen".