1945909874 has 8 divisors (see below), whose sum is σ = 2986745520. Its totient is φ = 950328036.

The previous prime is 1945909873. The next prime is 1945909921. The reversal of 1945909874 is 4789095491.

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

It is not an unprimeable number, because it can be changed into a prime (1945909873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11313344 + ... + 11313515.

It is an arithmetic number, because the mean of its divisors is an integer number (373343190).

Almost surely, 2^1945909874 is an apocalyptic number.

1945909874 is a deficient number, since it is larger than the sum of its proper divisors (1040835646).

1945909874 is a wasteful number, since it uses less digits than its factorization.

1945909874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22626904.

The product of its (nonzero) digits is 3265920, while the sum is 56.

The square root of 1945909874 is about 44112.4684641429. The cubic root of 1945909874 is about 1248.4588738450.

The spelling of 1945909874 in words is "one billion, nine hundred forty-five million, nine hundred nine thousand, eight hundred seventy-four".