1381579051 has 4 divisors (see below), whose sum is σ = 1395822232. Its totient is φ = 1367335872.

The previous prime is 1381579039. The next prime is 1381579123. The reversal of 1381579051 is 1509751831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1381579051 - 2¹³ = 1381570859 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1381578995 and 1381579013.

It is not an unprimeable number, because it can be changed into a prime (1381579021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7121445 + ... + 7121638.

It is an arithmetic number, because the mean of its divisors is an integer number (348955558).

Almost surely, 2^1381579051 is an apocalyptic number.

1381579051 is a deficient number, since it is larger than the sum of its proper divisors (14243181).

1381579051 is an equidigital number, since it uses as much as digits as its factorization.

1381579051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14243180.

The product of its (nonzero) digits is 37800, while the sum is 40.

The square root of 1381579051 is about 37169.5984777883. The cubic root of 1381579051 is about 1113.7607609085.

The spelling of 1381579051 in words is "one billion, three hundred eighty-one million, five hundred seventy-nine thousand, fifty-one".