1385876872 has 32 divisors (see below), whose sum is σ = 2746800000. Its totient is φ = 653704128.

The previous prime is 1385876867. The next prime is 1385876879. The reversal of 1385876872 is 2786785831.

It is a happy number.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1385876879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17254 + ... + 55402.

It is an arithmetic number, because the mean of its divisors is an integer number (85837500).

Almost surely, 2^1385876872 is an apocalyptic number.

It is an amenable number.

1385876872 is a deficient number, since it is larger than the sum of its proper divisors (1360923128).

1385876872 is a wasteful number, since it uses less digits than its factorization.

1385876872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38413 (or 38409 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 55.

The square root of 1385876872 is about 37227.3672450793. The cubic root of 1385876872 is about 1114.9144623932.

The spelling of 1385876872 in words is "one billion, three hundred eighty-five million, eight hundred seventy-six thousand, eight hundred seventy-two".