1385862144 has 88 divisors (see below), whose sum is σ = 3706216320. Its totient is φ = 460406784.

The previous prime is 1385862119. The next prime is 1385862173. The reversal of 1385862144 is 4412685831.

It is a happy number.

It is a super-2 number, since 2×1385862144² = 3841227764344553472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1385862096 and 1385862105.

It is a congruent 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, 1255897 + ... + 1256999.

Almost surely, 2^1385862144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1385862144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1853108160).

1385862144 is an abundant number, since it is smaller than the sum of its proper divisors (2320354176).

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

1385862144 is a wasteful number, since it uses less digits than its factorization.

1385862144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535 (or 1517 counting only the distinct ones).

The product of its digits is 184320, while the sum is 42.

The square root of 1385862144 is about 37227.1694330901. The cubic root of 1385862144 is about 1114.9105129037.

The spelling of 1385862144 in words is "one billion, three hundred eighty-five million, eight hundred sixty-two thousand, one hundred forty-four".