1401768738 has 48 divisors (see below), whose sum is σ = 3200277600. Its totient is φ = 442212480.

The previous prime is 1401768701. The next prime is 1401768763. The reversal of 1401768738 is 8378671041.

It is a super-2 number, since 2×1401768738² = 3929911189668225288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1401768693 and 1401768702.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 535978 + ... + 538586.

It is an arithmetic number, because the mean of its divisors is an integer number (66672450).

Almost surely, 2^1401768738 is an apocalyptic number.

1401768738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1401768738 is an abundant number, since it is smaller than the sum of its proper divisors (1798508862).

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

1401768738 is a wasteful number, since it uses less digits than its factorization.

1401768738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4207 (or 4204 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 1401768738 is about 37440.2021629157. The cubic root of 1401768738 is about 1119.1598551657.

The spelling of 1401768738 in words is "one billion, four hundred one million, seven hundred sixty-eight thousand, seven hundred thirty-eight".