2774385021 has 32 divisors (see below), whose sum is σ = 3975045120. Its totient is φ = 1717329600.

The previous prime is 2774385017. The next prime is 2774385067. The reversal of 2774385021 is 1205834772.

It is not a de Polignac number, because 2774385021 - 2² = 2774385017 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2774385071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 436456 + ... + 442766.

It is an arithmetic number, because the mean of its divisors is an integer number (124220160).

Almost surely, 2^2774385021 is an apocalyptic number.

It is an amenable number.

2774385021 is a deficient number, since it is larger than the sum of its proper divisors (1200660099).

2774385021 is a wasteful number, since it uses less digits than its factorization.

2774385021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6537.

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 2774385021 is about 52672.4313184801. The cubic root of 2774385021 is about 1405.1485632936.

The spelling of 2774385021 in words is "two billion, seven hundred seventy-four million, three hundred eighty-five thousand, twenty-one".