1913370438 has 16 divisors (see below), whose sum is σ = 4373418240. Its totient is φ = 546677256.

The previous prime is 1913370427. The next prime is 1913370449. The reversal of 1913370438 is 8340733191.

It is a happy number.

1913370438 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1913370427) and next prime (1913370449).

It is a junction number, because it is equal to n+sod(n) for n = 1913370396 and 1913370405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22778178 + ... + 22778261.

It is an arithmetic number, because the mean of its divisors is an integer number (273338640).

Almost surely, 2^1913370438 is an apocalyptic number.

1913370438 is an abundant number, since it is smaller than the sum of its proper divisors (2460047802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1913370438 is a wasteful number, since it uses less digits than its factorization.

1913370438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45556451.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 1913370438 is about 43742.0900049369. The cubic root of 1913370438 is about 1241.4608256070.

The spelling of 1913370438 in words is "one billion, nine hundred thirteen million, three hundred seventy thousand, four hundred thirty-eight".