945128461 has 4 divisors (see below), whose sum is σ = 945327132. Its totient is φ = 944929792.

The previous prime is 945128453. The next prime is 945128501. The reversal of 945128461 is 164821549.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 164821549 = 137 ⋅1203077.

It can be written as a sum of positive squares in 2 ways, for example, as 511031236 + 434097225 = 22606^2 + 20835^2 .

It is a cyclic number.

It is not a de Polignac number, because 945128461 - 2³ = 945128453 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 (945128441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92020 + ... + 101773.

It is an arithmetic number, because the mean of its divisors is an integer number (236331783).

Almost surely, 2^945128461 is an apocalyptic number.

It is an amenable number.

945128461 is a deficient number, since it is larger than the sum of its proper divisors (198671).

945128461 is a wasteful number, since it uses less digits than its factorization.

945128461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198670.

The product of its digits is 69120, while the sum is 40.

The square root of 945128461 is about 30742.9416451972. The cubic root of 945128461 is about 981.3643571211.

The spelling of 945128461 in words is "nine hundred forty-five million, one hundred twenty-eight thousand, four hundred sixty-one".