2581153942 has 8 divisors (see below), whose sum is σ = 3872477736. Its totient is φ = 1290328032.

The previous prime is 2581153937. The next prime is 2581153973. The reversal of 2581153942 is 2493511852.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 2581153895 and 2581153904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111228 + ... + 132415.

It is an arithmetic number, because the mean of its divisors is an integer number (484059717).

Almost surely, 2^2581153942 is an apocalyptic number.

2581153942 is a deficient number, since it is larger than the sum of its proper divisors (1291323794).

2581153942 is a wasteful number, since it uses less digits than its factorization.

2581153942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248942.

The product of its digits is 86400, while the sum is 40.

The square root of 2581153942 is about 50805.0582324241. The cubic root of 2581153942 is about 1371.7384190088.

The spelling of 2581153942 in words is "two billion, five hundred eighty-one million, one hundred fifty-three thousand, nine hundred forty-two".