1385124870 has 32 divisors (see below), whose sum is σ = 3336150240. Its totient is φ = 368049920.

The previous prime is 1385124841. The next prime is 1385124877. The reversal of 1385124870 is 784215831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385124877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73725 + ... + 90584.

It is an arithmetic number, because the mean of its divisors is an integer number (104254695).

Almost surely, 2^1385124870 is an apocalyptic number.

1385124870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1385124870 is an abundant number, since it is smaller than the sum of its proper divisors (1951025370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1385124870 is a wasteful number, since it uses less digits than its factorization.

1385124870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164600.

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 1385124870 is about 37217.2657512612. The cubic root of 1385124870 is about 1114.7127682853.

The spelling of 1385124870 in words is "one billion, three hundred eighty-five million, one hundred twenty-four thousand, eight hundred seventy".