1153642001 has 2 divisors, whose sum is σ = 1153642002. Its totient is φ = 1153642000.

The previous prime is 1153641997. The next prime is 1153642031. The reversal of 1153642001 is 1002463511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1144062976 + 9579025 = 33824^2 + 3095^2 .

It is a cyclic number.

It is not a de Polignac number, because 1153642001 - 2² = 1153641997 is a prime.

It is not a weakly prime, because it can be changed into another prime (1153642031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 576821000 + 576821001.

It is an arithmetic number, because the mean of its divisors is an integer number (576821001).

Almost surely, 2^1153642001 is an apocalyptic number.

It is an amenable number.

1153642001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1153642001 is an equidigital number, since it uses as much as digits as its factorization.

1153642001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1153642001 is about 33965.3058428744. The cubic root of 1153642001 is about 1048.7943837321.

The spelling of 1153642001 in words is "one billion, one hundred fifty-three million, six hundred forty-two thousand, one".