2146497397 has 4 divisors (see below), whose sum is σ = 2341633536. Its totient is φ = 1951361260.

The previous prime is 2146497373. The next prime is 2146497407. The reversal of 2146497397 is 7937946412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2146497397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2146497497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97568053 + ... + 97568074.

It is an arithmetic number, because the mean of its divisors is an integer number (585408384).

Almost surely, 2^2146497397 is an apocalyptic number.

It is an amenable number.

2146497397 is a deficient number, since it is larger than the sum of its proper divisors (195136139).

2146497397 is a wasteful number, since it uses less digits than its factorization.

2146497397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195136138.

The product of its digits is 2286144, while the sum is 52.

The square root of 2146497397 is about 46330.3075426874. The cubic root of 2146497397 is about 1289.9616191533.

The spelling of 2146497397 in words is "two billion, one hundred forty-six million, four hundred ninety-seven thousand, three hundred ninety-seven".