2145463646 has 8 divisors (see below), whose sum is σ = 3223171440. Its totient is φ = 1071073168.

The previous prime is 2145463613. The next prime is 2145463651. The reversal of 2145463646 is 6463645412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2145463646² = 9206028512615226632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 827711 + ... + 830298.

It is an arithmetic number, because the mean of its divisors is an integer number (402896430).

Almost surely, 2^2145463646 is an apocalyptic number.

2145463646 is a deficient number, since it is larger than the sum of its proper divisors (1077707794).

2145463646 is a wasteful number, since it uses less digits than its factorization.

2145463646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658658.

The product of its digits is 414720, while the sum is 41.

The square root of 2145463646 is about 46319.1498842541. The cubic root of 2145463646 is about 1289.7545044924.

The spelling of 2145463646 in words is "two billion, one hundred forty-five million, four hundred sixty-three thousand, six hundred forty-six".