2690161619 has 4 divisors (see below), whose sum is σ = 2690340744. Its totient is φ = 2689982496.

The previous prime is 2690161609. The next prime is 2690161631. The reversal of 2690161619 is 9161610962.

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

It is a cyclic number.

It is not a de Polignac number, because 2690161619 - 2⁴ = 2690161603 is a prime.

It is a super-2 number, since 2×2690161619² = 14473939072681402322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2690161609) 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, 64742 + ... + 97835.

It is an arithmetic number, because the mean of its divisors is an integer number (672585186).

Almost surely, 2^2690161619 is an apocalyptic number.

2690161619 is a deficient number, since it is larger than the sum of its proper divisors (179125).

2690161619 is a wasteful number, since it uses less digits than its factorization.

2690161619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179124.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 2690161619 is about 51866.7679636971. The cubic root of 2690161619 is about 1390.7832686686.

The spelling of 2690161619 in words is "two billion, six hundred ninety million, one hundred sixty-one thousand, six hundred nineteen".