2909187442 has 16 divisors (see below), whose sum is σ = 5020209792. Its totient is φ = 1238536800.

The previous prime is 2909187409. The next prime is 2909187443. The reversal of 2909187442 is 2447819092.

It is a junction number, because it is equal to n+sod(n) for n = 2909187392 and 2909187401.

It is not an unprimeable number, because it can be changed into a prime (2909187443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 685963 + ... + 690190.

It is an arithmetic number, because the mean of its divisors is an integer number (313763112).

Almost surely, 2^2909187442 is an apocalyptic number.

2909187442 is a deficient number, since it is larger than the sum of its proper divisors (2111022350).

2909187442 is a wasteful number, since it uses less digits than its factorization.

2909187442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376313.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 2909187442 is about 53936.8838736537. The cubic root of 2909187442 is about 1427.5475008500.

The spelling of 2909187442 in words is "two billion, nine hundred nine million, one hundred eighty-seven thousand, four hundred forty-two".