1129894501 has 2 divisors, whose sum is σ = 1129894502. Its totient is φ = 1129894500.

The previous prime is 1129894487. The next prime is 1129894529. The reversal of 1129894501 is 1054989211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 615784225 + 514110276 = 24815^2 + 22674^2 .

It is a cyclic number.

It is not a de Polignac number, because 1129894501 - 2¹³ = 1129886309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1129894561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564947250 + 564947251.

It is an arithmetic number, because the mean of its divisors is an integer number (564947251).

Almost surely, 2^1129894501 is an apocalyptic number.

It is an amenable number.

1129894501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1129894501 is an equidigital number, since it uses as much as digits as its factorization.

1129894501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 1129894501 is about 33613.9033883303. The cubic root of 1129894501 is about 1041.5480216386.

The spelling of 1129894501 in words is "one billion, one hundred twenty-nine million, eight hundred ninety-four thousand, five hundred one".