1263540002 has 16 divisors (see below), whose sum is σ = 1926593952. Its totient is φ = 621371520.

The previous prime is 1263539999. The next prime is 1263540013. The reversal of 1263540002 is 2000453621.

It is a self number, because there is not a number n which added to its sum of digits gives 1263540002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83177 + ... + 97187.

It is an arithmetic number, because the mean of its divisors is an integer number (120412122).

Almost surely, 2^1263540002 is an apocalyptic number.

1263540002 is a deficient number, since it is larger than the sum of its proper divisors (663053950).

1263540002 is a wasteful number, since it uses less digits than its factorization.

1263540002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14753.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1263540002 is about 35546.3078532778. The cubic root of 1263540002 is about 1081.0928586628.

Adding to 1263540002 its reverse (2000453621), we get a palindrome (3263993623).

The spelling of 1263540002 in words is "one billion, two hundred sixty-three million, five hundred forty thousand, two".