1555980962 has 4 divisors (see below), whose sum is σ = 2333971446. Its totient is φ = 777990480.

The previous prime is 1555980883. The next prime is 1555980967. The reversal of 1555980962 is 2690895551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2690895551 = 79 ⋅34061969.

It can be written as a sum of positive squares in only one way, i.e., 1196537281 + 359443681 = 34591^2 + 18959^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1555980962.

It is not an unprimeable number, because it can be changed into a prime (1555980967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 388995239 + ... + 388995242.

Almost surely, 2^1555980962 is an apocalyptic number.

1555980962 is a deficient number, since it is larger than the sum of its proper divisors (777990484).

1555980962 is an equidigital number, since it uses as much as digits as its factorization.

1555980962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777990483.

The product of its (nonzero) digits is 972000, while the sum is 50.

The square root of 1555980962 is about 39445.9245296647. The cubic root of 1555980962 is about 1158.7811618211.

The spelling of 1555980962 in words is "one billion, five hundred fifty-five million, nine hundred eighty thousand, nine hundred sixty-two".