1973540454 has 16 divisors (see below), whose sum is σ = 3947581440. Its totient is φ = 657763400.

The previous prime is 1973540449. The next prime is 1973540479. The reversal of 1973540454 is 4540453791.

It is a super-2 number, since 2×1973540454² = 7789723847149052232, which contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 47779 + ... + 78929.

It is an arithmetic number, because the mean of its divisors is an integer number (246723840).

Almost surely, 2^1973540454 is an apocalyptic number.

1973540454 is an abundant number, since it is smaller than the sum of its proper divisors (1974040986).

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

1973540454 is a wasteful number, since it uses less digits than its factorization.

1973540454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41715.

The product of its (nonzero) digits is 302400, while the sum is 42.

The square root of 1973540454 is about 44424.5478761461. The cubic root of 1973540454 is about 1254.3402094769.

The spelling of 1973540454 in words is "one billion, nine hundred seventy-three million, five hundred forty thousand, four hundred fifty-four".