1820772514 has 16 divisors (see below), whose sum is σ = 2989037376. Its totient is φ = 824959600.

The previous prime is 1820772491. The next prime is 1820772517. The reversal of 1820772514 is 4152770281.

It is not an unprimeable number, because it can be changed into a prime (1820772517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126217 + ... + 139900.

It is an arithmetic number, because the mean of its divisors is an integer number (186814836).

Almost surely, 2^1820772514 is an apocalyptic number.

1820772514 is a deficient number, since it is larger than the sum of its proper divisors (1168264862).

1820772514 is a wasteful number, since it uses less digits than its factorization.

1820772514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266441.

The product of its (nonzero) digits is 31360, while the sum is 37.

The square root of 1820772514 is about 42670.5110585753. The cubic root of 1820772514 is about 1221.1018697917.

The spelling of 1820772514 in words is "one billion, eight hundred twenty million, seven hundred seventy-two thousand, five hundred fourteen".