1386625870 has 64 divisors (see below), whose sum is σ = 2887353216. Its totient is φ = 469647360.

The previous prime is 1386625853. The next prime is 1386625873. The reversal of 1386625870 is 785266831.

It is a self number, because there is not a number n which added to its sum of digits gives 1386625870.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1386625873) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2661210 + ... + 2661730.

It is an arithmetic number, because the mean of its divisors is an integer number (45114894).

Almost surely, 2^1386625870 is an apocalyptic number.

1386625870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1386625870 is an abundant number, since it is smaller than the sum of its proper divisors (1500727346).

1386625870 is a wasteful number, since it uses less digits than its factorization.

1386625870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 1386625870 is about 37237.4256629000. The cubic root of 1386625870 is about 1115.1152782874.

The spelling of 1386625870 in words is "one billion, three hundred eighty-six million, six hundred twenty-five thousand, eight hundred seventy".