1151620451 has 2 divisors, whose sum is σ = 1151620452. Its totient is φ = 1151620450.

The previous prime is 1151620397. The next prime is 1151620489. The reversal of 1151620451 is 1540261511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1151620451 - 2³⁰ = 77878627 is a prime.

It is a super-2 number, since 2×1151620451² = 2652459326322886802, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1151620451.

It is not a weakly prime, because it can be changed into another prime (1151625451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575810225 + 575810226.

It is an arithmetic number, because the mean of its divisors is an integer number (575810226).

Almost surely, 2^1151620451 is an apocalyptic number.

1151620451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1151620451 is an equidigital number, since it uses as much as digits as its factorization.

1151620451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 1151620451 is about 33935.5337515119. The cubic root of 1151620451 is about 1048.1814177488.

Adding to 1151620451 its reverse (1540261511), we get a palindrome (2691881962).

The spelling of 1151620451 in words is "one billion, one hundred fifty-one million, six hundred twenty thousand, four hundred fifty-one".