1161017450 has 48 divisors (see below), whose sum is σ = 2227056120. Its totient is φ = 449982720.

The previous prime is 1161017443. The next prime is 1161017471. The reversal of 1161017450 is 547101611.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 21077281 + 1139940169 = 4591^2 + 33763^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 496484 + ... + 498816.

Almost surely, 2^1161017450 is an apocalyptic number.

1161017450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1161017450 is a deficient number, since it is larger than the sum of its proper divisors (1066038670).

1161017450 is a wasteful number, since it uses less digits than its factorization.

1161017450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2651 (or 2646 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 1161017450 is about 34073.7061383114. The cubic root of 1161017450 is about 1051.0246837482.

The spelling of 1161017450 in words is "one billion, one hundred sixty-one million, seventeen thousand, four hundred fifty".