1963626540 has 48 divisors (see below), whose sum is σ = 5687750880. Its totient is φ = 505576960.

The previous prime is 1963626529. The next prime is 1963626559. The reversal of 1963626540 is 456263691.

It is a junction number, because it is equal to n+sod(n) for n = 1963626492 and 1963626501.

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, 562521 + ... + 566000.

It is an arithmetic number, because the mean of its divisors is an integer number (118494810).

Almost surely, 2^1963626540 is an apocalyptic number.

1963626540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1963626540 is an abundant number, since it is smaller than the sum of its proper divisors (3724124340).

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

1963626540 is a wasteful number, since it uses less digits than its factorization.

1963626540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128562 (or 1128560 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 42.

The square root of 1963626540 is about 44312.8259085335. The cubic root of 1963626540 is about 1252.2363252270.

The spelling of 1963626540 in words is "one billion, nine hundred sixty-three million, six hundred twenty-six thousand, five hundred forty".