1375621347 has 8 divisors (see below), whose sum is σ = 1834721280. Its totient is φ = 916801160.

The previous prime is 1375621343. The next prime is 1375621363. The reversal of 1375621347 is 7431265731.

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

It is a cyclic number.

It is not a de Polignac number, because 1375621347 - 2² = 1375621343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1375621343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58179 + ... + 78332.

It is an arithmetic number, because the mean of its divisors is an integer number (229340160).

Almost surely, 2^1375621347 is an apocalyptic number.

1375621347 is a deficient number, since it is larger than the sum of its proper divisors (459099933).

1375621347 is a wasteful number, since it uses less digits than its factorization.

1375621347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139873.

The product of its digits is 105840, while the sum is 39.

The square root of 1375621347 is about 37089.3697304228. The cubic root of 1375621347 is about 1112.1575186495.

The spelling of 1375621347 in words is "one billion, three hundred seventy-five million, six hundred twenty-one thousand, three hundred forty-seven".