1011274643 has 2 divisors, whose sum is σ = 1011274644. Its totient is φ = 1011274642.

The previous prime is 1011274577. The next prime is 1011274651. The reversal of 1011274643 is 3464721101.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1011274643 - 2¹⁶ = 1011209107 is a prime.

It is not a weakly prime, because it can be changed into another prime (1011274673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505637321 + 505637322.

It is an arithmetic number, because the mean of its divisors is an integer number (505637322).

Almost surely, 2^1011274643 is an apocalyptic number.

1011274643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011274643 is an equidigital number, since it uses as much as digits as its factorization.

1011274643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 1011274643 is about 31800.5446965929. The cubic root of 1011274643 is about 1003.7441779683.

Adding to 1011274643 its reverse (3464721101), we get a palindrome (4475995744).

The spelling of 1011274643 in words is "one billion, eleven million, two hundred seventy-four thousand, six hundred forty-three".