1463270721 has 16 divisors (see below), whose sum is σ = 2136499200. Its totient is φ = 883453520.

The previous prime is 1463270707. The next prime is 1463270747. The reversal of 1463270721 is 1270723641.

It is a cyclic number.

It is not a de Polignac number, because 1463270721 - 2⁹ = 1463270209 is a prime.

It is a super-2 number, since 2×1463270721² = 4282322405871719682, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1463270791) 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, 75621 + ... + 92978.

It is an arithmetic number, because the mean of its divisors is an integer number (133531200).

Almost surely, 2^1463270721 is an apocalyptic number.

1463270721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1463270721 is a deficient number, since it is larger than the sum of its proper divisors (673228479).

1463270721 is a wasteful number, since it uses less digits than its factorization.

1463270721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168876.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 1463270721 is about 38252.7217463019. The cubic root of 1463270721 is about 1135.2936992792.

The spelling of 1463270721 in words is "one billion, four hundred sixty-three million, two hundred seventy thousand, seven hundred twenty-one".