2046721457 has 4 divisors (see below), whose sum is σ = 2232787056. Its totient is φ = 1860655860.

The previous prime is 2046721423. The next prime is 2046721499. The reversal of 2046721457 is 7541276402.

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 not a de Polignac number, because 2046721457 - 2¹⁶ = 2046655921 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2046721457.

It is not an unprimeable number, because it can be changed into a prime (2046721357) 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, 93032783 + ... + 93032804.

It is an arithmetic number, because the mean of its divisors is an integer number (558196764).

Almost surely, 2^2046721457 is an apocalyptic number.

It is an amenable number.

2046721457 is a deficient number, since it is larger than the sum of its proper divisors (186065599).

2046721457 is a wasteful number, since it uses less digits than its factorization.

2046721457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186065598.

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

The square root of 2046721457 is about 45240.7057526737. The cubic root of 2046721457 is about 1269.6565208723.

Adding to 2046721457 its reverse (7541276402), we get a palindrome (9587997859).

Subtracting 2046721457 from its reverse (7541276402), we obtain a palindrome (5494554945).

The spelling of 2046721457 in words is "two billion, forty-six million, seven hundred twenty-one thousand, four hundred fifty-seven".