1945961602 has 16 divisors (see below), whose sum is σ = 3155173560. Its totient is φ = 894794112.

The previous prime is 1945961597. The next prime is 1945961623. The reversal of 1945961602 is 2061695491.

It can be written as a sum of positive squares in 4 ways, for example, as 805481161 + 1140480441 = 28381^2 + 33771^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132123 + ... + 146110.

Almost surely, 2^1945961602 is an apocalyptic number.

1945961602 is a deficient number, since it is larger than the sum of its proper divisors (1209211958).

1945961602 is a wasteful number, since it uses less digits than its factorization.

1945961602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278517.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 1945961602 is about 44113.0547797361. The cubic root of 1945961602 is about 1248.4699363149.

The spelling of 1945961602 in words is "one billion, nine hundred forty-five million, nine hundred sixty-one thousand, six hundred two".