1386990715 has 8 divisors (see below), whose sum is σ = 1815697008. Its totient is φ = 1008720480.

The previous prime is 1386990691. The next prime is 1386990721. The reversal of 1386990715 is 5170996831.

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

It is not a de Polignac number, because 1386990715 - 2¹³ = 1386982523 is a prime.

It is a super-2 number, since 2×1386990715² = 3847486486992422450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12608952 + ... + 12609061.

It is an arithmetic number, because the mean of its divisors is an integer number (226962126).

Almost surely, 2^1386990715 is an apocalyptic number.

1386990715 is a deficient number, since it is larger than the sum of its proper divisors (428706293).

1386990715 is a wasteful number, since it uses less digits than its factorization.

1386990715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25218029.

The product of its (nonzero) digits is 408240, while the sum is 49.

The square root of 1386990715 is about 37242.3242427215. The cubic root of 1386990715 is about 1115.2130716829.

The spelling of 1386990715 in words is "one billion, three hundred eighty-six million, nine hundred ninety thousand, seven hundred fifteen".