1961614358954 has 4 divisors (see below), whose sum is σ = 2942421538434. Its totient is φ = 980807179476.

The previous prime is 1961614358953. The next prime is 1961614358959. The reversal of 1961614358954 is 4598534161691.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1959375649729 + 2238709225 = 1399777^2 + 47315^2 .

It is not an unprimeable number, because it can be changed into a prime (1961614358953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490403589737 + ... + 490403589740.

Almost surely, 2^{1961614358954} is an apocalyptic number.

1961614358954 is a deficient number, since it is larger than the sum of its proper divisors (980807179480).

1961614358954 is an equidigital number, since it uses as much as digits as its factorization.

1961614358954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980807179479.

The product of its digits is 27993600, while the sum is 62.

The spelling of 1961614358954 in words is "one trillion, nine hundred sixty-one billion, six hundred fourteen million, three hundred fifty-eight thousand, nine hundred fifty-four".