1054621769 has 2 divisors, whose sum is σ = 1054621770. Its totient is φ = 1054621768.

The previous prime is 1054621759. The next prime is 1054621807. The reversal of 1054621769 is 9671264501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 975625225 + 78996544 = 31235^2 + 8888^2 .

It is an emirp because it is prime and its reverse (9671264501) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1054621769 is a prime.

It is a super-2 number, since 2×1054621769² = 2224454151297378722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1054621709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527310884 + 527310885.

It is an arithmetic number, because the mean of its divisors is an integer number (527310885).

Almost surely, 2^1054621769 is an apocalyptic number.

It is an amenable number.

1054621769 is a deficient number, since it is larger than the sum of its proper divisors (1).

1054621769 is an equidigital number, since it uses as much as digits as its factorization.

1054621769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 1054621769 is about 32474.9406312005. The cubic root of 1054621769 is about 1017.8854595456.

The spelling of 1054621769 in words is "one billion, fifty-four million, six hundred twenty-one thousand, seven hundred sixty-nine".