2381254639 has 8 divisors (see below), whose sum is σ = 2408617728. Its totient is φ = 2354046240.

The previous prime is 2381254633. The next prime is 2381254663. The reversal of 2381254639 is 9364521832.

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 2381254639 - 2³¹ = 233770991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2381254595 and 2381254604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2381254633) 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, 7567 + ... + 69424.

It is an arithmetic number, because the mean of its divisors is an integer number (301077216).

Almost surely, 2^2381254639 is an apocalyptic number.

2381254639 is a deficient number, since it is larger than the sum of its proper divisors (27363089).

2381254639 is a wasteful number, since it uses less digits than its factorization.

2381254639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77345.

The product of its digits is 311040, while the sum is 43.

The square root of 2381254639 is about 48798.1007724686. The cubic root of 2381254639 is about 1335.3710179959.

The spelling of 2381254639 in words is "two billion, three hundred eighty-one million, two hundred fifty-four thousand, six hundred thirty-nine".