2047671990 has 192 divisors, whose sum is σ = 6897945600. Its totient is φ = 409266432.

The previous prime is 2047671959. The next prime is 2047672043. The reversal of 2047671990 is 991767402.

2047671990 is a `hidden beast` number, since 20 + 476 + 71 + 9 + 90 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 149031 + ... + 162189.

It is an arithmetic number, because the mean of its divisors is an integer number (35926800).

Almost surely, 2^2047671990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2047671990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3448972800).

2047671990 is an abundant number, since it is smaller than the sum of its proper divisors (4850273610).

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

2047671990 is a wasteful number, since it uses less digits than its factorization.

2047671990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13211 (or 13208 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 2047671990 is about 45251.2098180811. The cubic root of 2047671990 is about 1269.8530406345.

The spelling of 2047671990 in words is "two billion, forty-seven million, six hundred seventy-one thousand, nine hundred ninety".