1961127459 has 6 divisors (see below), whose sum is σ = 2832739676. Its totient is φ = 1307418300.

The previous prime is 1961127439. The next prime is 1961127547. The reversal of 1961127459 is 9547211691.

1961127459 is a `hidden beast` number, since 1 + 9 + 611 + 27 + 4 + 5 + 9 = 666.

1961127459 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1961127459 - 2¹³ = 1961119267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1961127419) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 108951517 + ... + 108951534.

Almost surely, 2^1961127459 is an apocalyptic number.

1961127459 is a deficient number, since it is larger than the sum of its proper divisors (871612217).

1961127459 is a wasteful number, since it uses less digits than its factorization.

1961127459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217903057 (or 217903054 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The square root of 1961127459 is about 44284.6187631778. The cubic root of 1961127459 is about 1251.7048649446.

The spelling of 1961127459 in words is "one billion, nine hundred sixty-one million, one hundred twenty-seven thousand, four hundred fifty-nine".