381401495 has 4 divisors (see below), whose sum is σ = 457681800. Its totient is φ = 305121192.

The previous prime is 381401491. The next prime is 381401507. The reversal of 381401495 is 594104183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 594104183 = 1187 ⋅500509.

It is a cyclic number.

It is not a de Polignac number, because 381401495 - 2² = 381401491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381401491) 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 3 ways as a sum of consecutive naturals, for example, 38140145 + ... + 38140154.

It is an arithmetic number, because the mean of its divisors is an integer number (114420450).

Almost surely, 2^381401495 is an apocalyptic number.

381401495 is a deficient number, since it is larger than the sum of its proper divisors (76280305).

381401495 is an equidigital number, since it uses as much as digits as its factorization.

381401495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76280304.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 381401495 is about 19529.5031938859. The cubic root of 381401495 is about 725.2050121767.

The spelling of 381401495 in words is "three hundred eighty-one million, four hundred one thousand, four hundred ninety-five".