3781815258 has 16 divisors (see below), whose sum is σ = 8145448416. Its totient is φ = 1163635440.

The previous prime is 3781815253. The next prime is 3781815287. The reversal of 3781815258 is 8525181873.

It is not an unprimeable number, because it can be changed into a prime (3781815253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24242328 + ... + 24242483.

It is an arithmetic number, because the mean of its divisors is an integer number (509090526).

Almost surely, 2^3781815258 is an apocalyptic number.

3781815258 is an abundant number, since it is smaller than the sum of its proper divisors (4363633158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3781815258 is a wasteful number, since it uses less digits than its factorization.

3781815258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48484829.

The product of its digits is 537600, while the sum is 48.

The square root of 3781815258 is about 61496.4654106234. The cubic root of 3781815258 is about 1557.9975482282.

The spelling of 3781815258 in words is "three billion, seven hundred eighty-one million, eight hundred fifteen thousand, two hundred fifty-eight".