1961402384 has 10 divisors (see below), whose sum is σ = 3800217150. Its totient is φ = 980701184.

The previous prime is 1961402383. The next prime is 1961402389. The reversal of 1961402384 is 4832041691.

It can be written as a sum of positive squares in only one way, i.e., 1960009984 + 1392400 = 44272^2 + 1180^2 .

It is not an unprimeable number, because it can be changed into a prime (1961402383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61293809 + ... + 61293840.

It is an arithmetic number, because the mean of its divisors is an integer number (380021715).

Almost surely, 2^1961402384 is an apocalyptic number.

It is an amenable number.

1961402384 is a deficient number, since it is larger than the sum of its proper divisors (1838814766).

1961402384 is a wasteful number, since it uses less digits than its factorization.

1961402384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122587657 (or 122587651 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 1961402384 is about 44287.7227231205. The cubic root of 1961402384 is about 1251.7633532186.

The spelling of 1961402384 in words is "one billion, nine hundred sixty-one million, four hundred two thousand, three hundred eighty-four".