2381551942 has 32 divisors (see below), whose sum is σ = 4457263104. Its totient is φ = 927158400.

The previous prime is 2381551897. The next prime is 2381551943. The reversal of 2381551942 is 2491551832.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2381551895 and 2381551904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2381551943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221278 + ... + 231790.

It is an arithmetic number, because the mean of its divisors is an integer number (139289472).

Almost surely, 2^2381551942 is an apocalyptic number.

2381551942 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2381551942 is a deficient number, since it is larger than the sum of its proper divisors (2075711162).

2381551942 is a wasteful number, since it uses less digits than its factorization.

2381551942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12004.

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

The square root of 2381551942 is about 48801.1469332433. The cubic root of 2381551942 is about 1335.4265900015.

It can be divided in two parts, 23815 and 51942, that added together give a palindrome (75757).

The spelling of 2381551942 in words is "two billion, three hundred eighty-one million, five hundred fifty-one thousand, nine hundred forty-two".