1381625079 has 8 divisors (see below), whose sum is σ = 1842608880. Its totient is φ = 920862336.

The previous prime is 1381625059. The next prime is 1381625087. The reversal of 1381625079 is 9705261831.

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

It is not a de Polignac number, because 1381625079 - 2¹² = 1381620983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1381625079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381625009) 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 7 ways as a sum of consecutive naturals, for example, 40084 + ... + 66105.

It is an arithmetic number, because the mean of its divisors is an integer number (230326110).

Almost surely, 2^1381625079 is an apocalyptic number.

1381625079 is a deficient number, since it is larger than the sum of its proper divisors (460983801).

1381625079 is a wasteful number, since it uses less digits than its factorization.

1381625079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110529.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 1381625079 is about 37170.2176345525. The cubic root of 1381625079 is about 1113.7731292709.

The spelling of 1381625079 in words is "one billion, three hundred eighty-one million, six hundred twenty-five thousand, seventy-nine".