381612711810 has 32 divisors (see below), whose sum is σ = 999131464512. Its totient is φ = 92512172480.

The previous prime is 381612711791. The next prime is 381612711829. The reversal of 381612711810 is 18117216183.

It is an interprime number because it is at equal distance from previous prime (381612711791) and next prime (381612711829).

It is a super-2 number, since 2×381612711810² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 578200749 + ... + 578201408.

It is an arithmetic number, because the mean of its divisors is an integer number (31222858266).

Almost surely, 2^381612711810 is an apocalyptic number.

381612711810 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

381612711810 is an abundant number, since it is smaller than the sum of its proper divisors (617518752702).

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

381612711810 is a wasteful number, since it uses less digits than its factorization.

381612711810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156402178.

The product of its (nonzero) digits is 16128, while the sum is 39.

Adding to 381612711810 its reverse (18117216183), we get a palindrome (399729927993).

The spelling of 381612711810 in words is "three hundred eighty-one billion, six hundred twelve million, seven hundred eleven thousand, eight hundred ten".