2106257474 has 4 divisors (see below), whose sum is σ = 3159386214. Its totient is φ = 1053128736.

The previous prime is 2106257437. The next prime is 2106257477. The reversal of 2106257474 is 4747526012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1328238025 + 778019449 = 36445^2 + 27893^2 .

It is not an unprimeable number, because it can be changed into a prime (2106257477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 526564367 + ... + 526564370.

Almost surely, 2^2106257474 is an apocalyptic number.

2106257474 is a deficient number, since it is larger than the sum of its proper divisors (1053128740).

2106257474 is a wasteful number, since it uses less digits than its factorization.

2106257474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053128739.

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 2106257474 is about 45893.9808035869. The cubic root of 2106257474 is about 1281.8498387778.

The spelling of 2106257474 in words is "two billion, one hundred six million, two hundred fifty-seven thousand, four hundred seventy-four".