1386274656 has 288 divisors, whose sum is σ = 4403494368. Its totient is φ = 378224640.

The previous prime is 1386274649. The next prime is 1386274663. The reversal of 1386274656 is 6564726831.

It is an interprime number because it is at equal distance from previous prime (1386274649) and next prime (1386274663).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7658886 + ... + 7659066.

It is an arithmetic number, because the mean of its divisors is an integer number (15289911).

Almost surely, 2^1386274656 is an apocalyptic number.

1386274656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1386274656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2201747184).

1386274656 is an abundant number, since it is smaller than the sum of its proper divisors (3017219712).

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

1386274656 is a wasteful number, since it uses less digits than its factorization.

1386274656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262 (or 235 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 48.

The square root of 1386274656 is about 37232.7094904467. The cubic root of 1386274656 is about 1115.0211223518.

The spelling of 1386274656 in words is "one billion, three hundred eighty-six million, two hundred seventy-four thousand, six hundred fifty-six".