2154366461 has 16 divisors (see below), whose sum is σ = 2444964480. Its totient is φ = 1883323200.

The previous prime is 2154366451. The next prime is 2154366469. The reversal of 2154366461 is 1646634512.

It is a cyclic number.

It is not a de Polignac number, because 2154366461 - 2⁶ = 2154366397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154366469) 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, 5471 + ... + 65868.

It is an arithmetic number, because the mean of its divisors is an integer number (152810280).

Almost surely, 2^2154366461 is an apocalyptic number.

It is an amenable number.

2154366461 is a deficient number, since it is larger than the sum of its proper divisors (290598019).

2154366461 is a wasteful number, since it uses less digits than its factorization.

2154366461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71476.

The product of its digits is 103680, while the sum is 38.

The square root of 2154366461 is about 46415.1533553429. The cubic root of 2154366461 is about 1291.5360307943.

The spelling of 2154366461 in words is "two billion, one hundred fifty-four million, three hundred sixty-six thousand, four hundred sixty-one".