1205158461 has 16 divisors (see below), whose sum is σ = 1732375680. Its totient is φ = 740825280.

The previous prime is 1205158457. The next prime is 1205158519. The reversal of 1205158461 is 1648515021.

It is not a de Polignac number, because 1205158461 - 2² = 1205158457 is a prime.

It is a super-2 number, since 2×1205158461² = 2904813832239777042, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205158421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20280 + ... + 53118.

It is an arithmetic number, because the mean of its divisors is an integer number (108273480).

Almost surely, 2^1205158461 is an apocalyptic number.

It is an amenable number.

1205158461 is a deficient number, since it is larger than the sum of its proper divisors (527217219).

1205158461 is a wasteful number, since it uses less digits than its factorization.

1205158461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33796.

The product of its (nonzero) digits is 9600, while the sum is 33.

The square root of 1205158461 is about 34715.3922777779. The cubic root of 1205158461 is about 1064.1790821701.

The spelling of 1205158461 in words is "one billion, two hundred five million, one hundred fifty-eight thousand, four hundred sixty-one".