1378666701 has 12 divisors (see below), whose sum is σ = 1998759360. Its totient is φ = 915717960.

The previous prime is 1378666669. The next prime is 1378666721. The reversal of 1378666701 is 1076668731.

It is not a de Polignac number, because 1378666701 - 2⁵ = 1378666669 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378666721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 280191 + ... + 285068.

It is an arithmetic number, because the mean of its divisors is an integer number (166563280).

Almost surely, 2^1378666701 is an apocalyptic number.

It is an amenable number.

1378666701 is a deficient number, since it is larger than the sum of its proper divisors (620092659).

1378666701 is a wasteful number, since it uses less digits than its factorization.

1378666701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565536 (or 565533 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 1378666701 is about 37130.4013040527. The cubic root of 1378666701 is about 1112.9776128093.

The spelling of 1378666701 in words is "one billion, three hundred seventy-eight million, six hundred sixty-six thousand, seven hundred one".