2051630140 has 24 divisors (see below), whose sum is σ = 4923912672. Its totient is φ = 703416000.

The previous prime is 2051630137. The next prime is 2051630167. The reversal of 2051630140 is 410361502.

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, 7327111 + ... + 7327390.

It is an arithmetic number, because the mean of its divisors is an integer number (205163028).

Almost surely, 2^2051630140 is an apocalyptic number.

2051630140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2051630140 is an abundant number, since it is smaller than the sum of its proper divisors (2872282532).

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

2051630140 is a wasteful number, since it uses less digits than its factorization.

2051630140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14654517 (or 14654515 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2051630140 is about 45294.9239981700. The cubic root of 2051630140 is about 1270.6707226523.

Adding to 2051630140 its reverse (410361502), we get a palindrome (2461991642).

The spelling of 2051630140 in words is "two billion, fifty-one million, six hundred thirty thousand, one hundred forty".