1961582073 has 16 divisors (see below), whose sum is σ = 2853994176. Its totient is φ = 1188511040.

The previous prime is 1961582057. The next prime is 1961582089. The reversal of 1961582073 is 3702851691.

It is an interprime number because it is at equal distance from previous prime (1961582057) and next prime (1961582089).

It is a cyclic number.

It is not a de Polignac number, because 1961582073 - 2⁴ = 1961582057 is a prime.

It is a super-2 number, since 2×1961582073² = 7695608458229954658, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1961582053) 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, 175315 + ... + 186167.

It is an arithmetic number, because the mean of its divisors is an integer number (178374636).

Almost surely, 2^1961582073 is an apocalyptic number.

It is an amenable number.

1961582073 is a deficient number, since it is larger than the sum of its proper divisors (892412103).

1961582073 is a wasteful number, since it uses less digits than its factorization.

1961582073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16344.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 1961582073 is about 44289.7513314311. The cubic root of 1961582073 is about 1251.8015777799.

The spelling of 1961582073 in words is "one billion, nine hundred sixty-one million, five hundred eighty-two thousand, seventy-three".