1961947848 has 48 divisors (see below), whose sum is σ = 5705668080. Its totient is φ = 560556192.

The previous prime is 1961947787. The next prime is 1961947853. The reversal of 1961947848 is 8487491691.

It is a happy number.

It is a super-2 number, since 2×1961947848² = 7698478716543662208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 832986 + ... + 835337.

It is an arithmetic number, because the mean of its divisors is an integer number (118868085).

Almost surely, 2^1961947848 is an apocalyptic number.

It is an amenable number.

1961947848 is an abundant number, since it is smaller than the sum of its proper divisors (3743720232).

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

1961947848 is a wasteful number, since it uses less digits than its factorization.

1961947848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1668346 (or 1668335 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 57.

The square root of 1961947848 is about 44293.8804802650. The cubic root of 1961947848 is about 1251.8793805004.

The spelling of 1961947848 in words is "one billion, nine hundred sixty-one million, nine hundred forty-seven thousand, eight hundred forty-eight".