1961047572 has 48 divisors (see below), whose sum is σ = 5005056000. Its totient is φ = 592673760.

The previous prime is 1961047559. The next prime is 1961047601. The reversal of 1961047572 is 2757401691.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30429 + ... + 69627.

It is an arithmetic number, because the mean of its divisors is an integer number (104272000).

Almost surely, 2^1961047572 is an apocalyptic number.

1961047572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1961047572 is an abundant number, since it is smaller than the sum of its proper divisors (3044008428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1961047572 is a wasteful number, since it uses less digits than its factorization.

1961047572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39596 (or 39594 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 42.

The square root of 1961047572 is about 44283.7167816795. The cubic root of 1961047572 is about 1251.6878685473.

The spelling of 1961047572 in words is "one billion, nine hundred sixty-one million, forty-seven thousand, five hundred seventy-two".