1961402328 has 24 divisors (see below), whose sum is σ = 5312131500. Its totient is φ = 653800752.

The previous prime is 1961402291. The next prime is 1961402363. The reversal of 1961402328 is 8232041691.

1961402328 is a `hidden beast` number, since 1 + 9 + 614 + 0 + 2 + 32 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1961402292 and 1961402301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13620778 + ... + 13620921.

Almost surely, 2^1961402328 is an apocalyptic number.

1961402328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1961402328 is an abundant number, since it is smaller than the sum of its proper divisors (3350729172).

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

1961402328 is a wasteful number, since it uses less digits than its factorization.

1961402328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27241711 (or 27241704 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 1961402328 is about 44287.7220908911. The cubic root of 1961402328 is about 1251.7633413056.

The spelling of 1961402328 in words is "one billion, nine hundred sixty-one million, four hundred two thousand, three hundred twenty-eight".