1975963920 has 160 divisors (see below), whose sum is σ = 7014408192. Its totient is φ = 450756096.

The previous prime is 1975963909. The next prime is 1975963931. The reversal of 1975963920 is 293695791.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1975963909) and next prime (1975963931).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1247449 + ... + 1249031.

Almost surely, 2^1975963920 is an apocalyptic number.

1975963920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1975963920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3507204096).

1975963920 is an abundant number, since it is smaller than the sum of its proper divisors (5038444272).

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

1975963920 is a wasteful number, since it uses less digits than its factorization.

1975963920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2349 (or 2343 counting only the distinct ones).

The product of its (nonzero) digits is 918540, while the sum is 51.

The square root of 1975963920 is about 44451.8157109471. The cubic root of 1975963920 is about 1254.8534338873.

The spelling of 1975963920 in words is "one billion, nine hundred seventy-five million, nine hundred sixty-three thousand, nine hundred twenty".