381505514 has 16 divisors (see below), whose sum is σ = 617111880. Its totient is φ = 175841280.

The previous prime is 381505489. The next prime is 381505543. The reversal of 381505514 is 415505183.

It can be written as a sum of positive squares in 4 ways, for example, as 176013289 + 205492225 = 13267^2 + 14335^2 .

It is an unprimeable number.

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, 10454 + ... + 29534.

Almost surely, 2^381505514 is an apocalyptic number.

381505514 is a deficient number, since it is larger than the sum of its proper divisors (235606366).

381505514 is a wasteful number, since it uses less digits than its factorization.

381505514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19865.

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 381505514 is about 19532.1661369137. The cubic root of 381505514 is about 725.2709341727.

The spelling of 381505514 in words is "three hundred eighty-one million, five hundred five thousand, five hundred fourteen".