1962449640 has 64 divisors (see below), whose sum is σ = 6541502400. Its totient is φ = 523319616.

The previous prime is 1962449639. The next prime is 1962449683. The reversal of 1962449640 is 469442691.

1962449640 is a `hidden beast` number, since 19 + 624 + 4 + 9 + 6 + 4 + 0 = 666.

It is a super-2 number, since 2×1962449640² = 7702417179072259200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 907462 + ... + 909621.

It is an arithmetic number, because the mean of its divisors is an integer number (102210975).

Almost surely, 2^1962449640 is an apocalyptic number.

1962449640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1962449640 is an abundant number, since it is smaller than the sum of its proper divisors (4579052760).

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

1962449640 is a wasteful number, since it uses less digits than its factorization.

1962449640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817103 (or 1817093 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 1962449640 is about 44299.5444671839. The cubic root of 1962449640 is about 1251.9860991900.

The spelling of 1962449640 in words is "one billion, nine hundred sixty-two million, four hundred forty-nine thousand, six hundred forty".