2038722391 has 8 divisors (see below), whose sum is σ = 2045633184. Its totient is φ = 2031822240.

The previous prime is 2038722373. The next prime is 2038722397. The reversal of 2038722391 is 1932278302.

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

It is a cyclic number.

It is not a de Polignac number, because 2038722391 - 2¹³ = 2038714199 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2038722391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2038722397) 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, 576270 + ... + 579796.

It is an arithmetic number, because the mean of its divisors is an integer number (255704148).

Almost surely, 2^2038722391 is an apocalyptic number.

2038722391 is a deficient number, since it is larger than the sum of its proper divisors (6910793).

2038722391 is a wasteful number, since it uses less digits than its factorization.

2038722391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5321.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 2038722391 is about 45152.2135780739. The cubic root of 2038722391 is about 1268.0003232111. Note that the first 3 decimals are identical.

It can be divided in two parts, 20387 and 22391, that added together give a triangular number (42778 = T₂₉₂).

The spelling of 2038722391 in words is "two billion, thirty-eight million, seven hundred twenty-two thousand, three hundred ninety-one".