2047771388 has 48 divisors (see below), whose sum is σ = 4015992960. Its totient is φ = 907505664.

The previous prime is 2047771387. The next prime is 2047771391. The reversal of 2047771388 is 8831777402.

It is a super-2 number, since 2×2047771388² = 8386735315022893088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2047771387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121628 + ... + 137436.

It is an arithmetic number, because the mean of its divisors is an integer number (83666520).

Almost surely, 2^2047771388 is an apocalyptic number.

It is an amenable number.

2047771388 is a deficient number, since it is larger than the sum of its proper divisors (1968221572).

2047771388 is a wasteful number, since it uses less digits than its factorization.

2047771388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15926 (or 15924 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 47.

The square root of 2047771388 is about 45252.3080958309. The cubic root of 2047771388 is about 1269.8735873515.

The spelling of 2047771388 in words is "two billion, forty-seven million, seven hundred seventy-one thousand, three hundred eighty-eight".