2157492346 has 4 divisors (see below), whose sum is σ = 3236238522. Its totient is φ = 1078746172.

The previous prime is 2157492341. The next prime is 2157492361. The reversal of 2157492346 is 6432947512.

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., 1441341225 + 716151121 = 37965^2 + 26761^2 .

It is not an unprimeable number, because it can be changed into a prime (2157492341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539373085 + ... + 539373088.

Almost surely, 2^2157492346 is an apocalyptic number.

2157492346 is a deficient number, since it is larger than the sum of its proper divisors (1078746176).

2157492346 is a wasteful number, since it uses less digits than its factorization.

2157492346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078746175.

The product of its digits is 362880, while the sum is 43.

The square root of 2157492346 is about 46448.8142582779. The cubic root of 2157492346 is about 1292.1603817204.

The spelling of 2157492346 in words is "two billion, one hundred fifty-seven million, four hundred ninety-two thousand, three hundred forty-six".