1869601381 has 8 divisors (see below), whose sum is σ = 1903638240. Its totient is φ = 1835642928.

The previous prime is 1869601369. The next prime is 1869601397. The reversal of 1869601381 is 1831069681.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1869601381 - 2¹³ = 1869593189 is a prime.

It is a super-2 number, since 2×1869601381² = 6990818647674214322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1869601301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29635 + ... + 67951.

It is an arithmetic number, because the mean of its divisors is an integer number (237954780).

Almost surely, 2^1869601381 is an apocalyptic number.

It is an amenable number.

1869601381 is a deficient number, since it is larger than the sum of its proper divisors (34036859).

1869601381 is an equidigital number, since it uses as much as digits as its factorization.

1869601381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39203.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 1869601381 is about 43238.8873700515. The cubic root of 1869601381 is about 1231.9214204411.

The spelling of 1869601381 in words is "one billion, eight hundred sixty-nine million, six hundred one thousand, three hundred eighty-one".