1961024690 has 8 divisors (see below), whose sum is σ = 3529844460. Its totient is φ = 784409872.

The previous prime is 1961024687. The next prime is 1961024693. The reversal of 1961024690 is 964201691.

It is an interprime number because it is at equal distance from previous prime (1961024687) and next prime (1961024693).

It can be written as a sum of positive squares in 2 ways, for example, as 1941195481 + 19829209 = 44059^2 + 4453^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1961024690² = 7691235669579192200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1961024693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98051225 + ... + 98051244.

Almost surely, 2^1961024690 is an apocalyptic number.

1961024690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1961024690 is a deficient number, since it is larger than the sum of its proper divisors (1568819770).

1961024690 is a wasteful number, since it uses less digits than its factorization.

1961024690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196102476.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 1961024690 is about 44283.4584241114. The cubic root of 1961024690 is about 1251.6830001913.

The spelling of 1961024690 in words is "one billion, nine hundred sixty-one million, twenty-four thousand, six hundred ninety".