1263255016 has 8 divisors (see below), whose sum is σ = 2368603170. Its totient is φ = 631627504.

The previous prime is 1263255001. The next prime is 1263255031. The reversal of 1263255016 is 6105523621.

It is an interprime number because it is at equal distance from previous prime (1263255001) and next prime (1263255031).

It can be written as a sum of positive squares in only one way, i.e., 1005524100 + 257730916 = 31710^2 + 16054^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78953431 + ... + 78953446.

Almost surely, 2^1263255016 is an apocalyptic number.

It is an amenable number.

1263255016 is a deficient number, since it is larger than the sum of its proper divisors (1105348154).

1263255016 is a wasteful number, since it uses less digits than its factorization.

1263255016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157906883 (or 157906879 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 1263255016 is about 35542.2989689750. The cubic root of 1263255016 is about 1081.0115739403.

Adding to 1263255016 its reverse (6105523621), we get a palindrome (7368778637).

The spelling of 1263255016 in words is "one billion, two hundred sixty-three million, two hundred fifty-five thousand, sixteen".