1961925826 has 48 divisors (see below), whose sum is σ = 3625473600. Its totient is φ = 777851424.

The previous prime is 1961925803. The next prime is 1961925839. The reversal of 1961925826 is 6285291691.

It is a self number, because there is not a number n which added to its sum of digits gives 1961925826.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 489840 + ... + 493828.

It is an arithmetic number, because the mean of its divisors is an integer number (75530700).

Almost surely, 2^1961925826 is an apocalyptic number.

1961925826 is a deficient number, since it is larger than the sum of its proper divisors (1663547774).

1961925826 is a wasteful number, since it uses less digits than its factorization.

1961925826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4103 (or 4060 counting only the distinct ones).

The product of its digits is 466560, while the sum is 49.

The square root of 1961925826 is about 44293.6318899230. The cubic root of 1961925826 is about 1251.8746965514.

The spelling of 1961925826 in words is "one billion, nine hundred sixty-one million, nine hundred twenty-five thousand, eight hundred twenty-six".