381645495 has 288 divisors, whose sum is σ = 956067840. Its totient is φ = 136857600.

The previous prime is 381645487. The next prime is 381645503. The reversal of 381645495 is 594546183.

It is an interprime number because it is at equal distance from previous prime (381645487) and next prime (381645503).

It is not a de Polignac number, because 381645495 - 2³ = 381645487 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 381645495.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 12311130 + ... + 12311160.

It is an arithmetic number, because the mean of its divisors is an integer number (3319680).

Almost surely, 2^381645495 is an apocalyptic number.

381645495 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

381645495 is an abundant number, since it is smaller than the sum of its proper divisors (574422345).

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

381645495 is a wasteful number, since it uses less digits than its factorization.

381645495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107 (or 93 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 381645495 is about 19535.7491537949. The cubic root of 381645495 is about 725.3596281604.

The spelling of 381645495 in words is "three hundred eighty-one million, six hundred forty-five thousand, four hundred ninety-five".