2719161901 has 4 divisors (see below), whose sum is σ = 2719274400. Its totient is φ = 2719049404.

The previous prime is 2719161899. The next prime is 2719161919. The reversal of 2719161901 is 1091619172.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2719161901 - 2¹ = 2719161899 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 (2719171901) 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, 3511 + ... + 73828.

It is an arithmetic number, because the mean of its divisors is an integer number (679818600).

Almost surely, 2^2719161901 is an apocalyptic number.

It is an amenable number.

2719161901 is a deficient number, since it is larger than the sum of its proper divisors (112499).

2719161901 is an equidigital number, since it uses as much as digits as its factorization.

2719161901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112498.

The product of its (nonzero) digits is 6804, while the sum is 37.

The square root of 2719161901 is about 52145.5837152102. The cubic root of 2719161901 is about 1395.7630236041.

The spelling of 2719161901 in words is "two billion, seven hundred nineteen million, one hundred sixty-one thousand, nine hundred one".