1400387648 has 84 divisors (see below), whose sum is σ = 3220803312. Its totient is φ = 599009280.

The previous prime is 1400387633. The next prime is 1400387663. The reversal of 1400387648 is 8467830041.

It is an interprime number because it is at equal distance from previous prime (1400387633) and next prime (1400387663).

It is a super-2 number, since 2×1400387648² = 3922171129341943808, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200015 + ... + 206897.

Almost surely, 2^1400387648 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 1400387648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1610401656).

1400387648 is an abundant number, since it is smaller than the sum of its proper divisors (1820415664).

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

1400387648 is a wasteful number, since it uses less digits than its factorization.

1400387648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6940 (or 6913 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 1400387648 is about 37421.7536734985. The cubic root of 1400387648 is about 1118.7921843461.

The spelling of 1400387648 in words is "one billion, four hundred million, three hundred eighty-seven thousand, six hundred forty-eight".