2119426949 has 4 divisors (see below), whose sum is σ = 2128523436. Its totient is φ = 2110330464.

The previous prime is 2119426937. The next prime is 2119426963. The reversal of 2119426949 is 9496249112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1314570049 + 804856900 = 36257^2 + 28370^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2119426949 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 (2119426999) 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, 4547894 + ... + 4548359.

It is an arithmetic number, because the mean of its divisors is an integer number (532130859).

Almost surely, 2^2119426949 is an apocalyptic number.

It is an amenable number.

2119426949 is a deficient number, since it is larger than the sum of its proper divisors (9096487).

2119426949 is an equidigital number, since it uses as much as digits as its factorization.

2119426949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9096486.

The product of its digits is 279936, while the sum is 47.

The square root of 2119426949 is about 46037.2343761004. The cubic root of 2119426949 is about 1284.5158989396.

The spelling of 2119426949 in words is "two billion, one hundred nineteen million, four hundred twenty-six thousand, nine hundred forty-nine".