2051378032 has 40 divisors (see below), whose sum is σ = 4590924912. Its totient is φ = 877593600.

The previous prime is 2051377987. The next prime is 2051378033. The reversal of 2051378032 is 2308731502.

It is a junction number, because it is equal to n+sod(n) for n = 2051377985 and 2051378003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051378033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 339819 + ... + 345802.

Almost surely, 2^2051378032 is an apocalyptic number.

2051378032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2051378032 is an abundant number, since it is smaller than the sum of its proper divisors (2539546880).

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

2051378032 is a wasteful number, since it uses less digits than its factorization.

2051378032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685657 (or 685651 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 2051378032 is about 45292.1409518252. The cubic root of 2051378032 is about 1270.6186730860.

It can be divided in two parts, 2051 and 378032, that added together give a palindrome (380083).

The spelling of 2051378032 in words is "two billion, fifty-one million, three hundred seventy-eight thousand, thirty-two".