2451881542 has 16 divisors (see below), whose sum is σ = 4248180432. Its totient is φ = 1048933120.

The previous prime is 2451881539. The next prime is 2451881561.

2451881542 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 2451881495 and 2451881504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3277543 + ... + 3278290.

It is an arithmetic number, because the mean of its divisors is an integer number (265511277).

Almost surely, 2^2451881542 is an apocalyptic number.

2451881542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2451881542 is a deficient number, since it is larger than the sum of its proper divisors (1796298890).

2451881542 is a wasteful number, since it uses less digits than its factorization.

2451881542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6555863.

The product of its digits is 102400, while the sum is 40.

The square root of 2451881542 is about 49516.4774797239. The cubic root of 2451881542 is about 1348.4447644799. Note that the first 3 decimals are identical.

The spelling of 2451881542 in words is "two billion, four hundred fifty-one million, eight hundred eighty-one thousand, five hundred forty-two".