1011663253 has 4 divisors (see below), whose sum is σ = 1011782560. Its totient is φ = 1011543948.

The previous prime is 1011663239. The next prime is 1011663259. The reversal of 1011663253 is 3523661101.

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 1011663253 - 2¹³ = 1011655061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011663259) 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, 45873 + ... + 64246.

It is an arithmetic number, because the mean of its divisors is an integer number (252945640).

Almost surely, 2^1011663253 is an apocalyptic number.

It is an amenable number.

1011663253 is a deficient number, since it is larger than the sum of its proper divisors (119307).

1011663253 is an equidigital number, since it uses as much as digits as its factorization.

1011663253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119306.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 1011663253 is about 31806.6542251775. The cubic root of 1011663253 is about 1003.8727335735.

The spelling of 1011663253 in words is "one billion, eleven million, six hundred sixty-three thousand, two hundred fifty-three".