2209497738 has 32 divisors (see below), whose sum is σ = 5082463104. Its totient is φ = 627262272.

The previous prime is 2209497679. The next prime is 2209497739. The reversal of 2209497738 is 8377949022.

It is not an unprimeable number, because it can be changed into a prime (2209497739) 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, 160945 + ... + 174132.

It is an arithmetic number, because the mean of its divisors is an integer number (158826972).

Almost surely, 2^2209497738 is an apocalyptic number.

2209497738 is an abundant number, since it is smaller than the sum of its proper divisors (2872965366).

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

2209497738 is a wasteful number, since it uses less digits than its factorization.

2209497738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335246.

The product of its (nonzero) digits is 1524096, while the sum is 51.

The square root of 2209497738 is about 47005.2947868642. The cubic root of 2209497738 is about 1302.4603776370.

The spelling of 2209497738 in words is "two billion, two hundred nine million, four hundred ninety-seven thousand, seven hundred thirty-eight".