154830491644 has 24 divisors (see below), whose sum is σ = 277280886960. Its totient is φ = 75607722624.

The previous prime is 154830491581. The next prime is 154830491657. The reversal of 154830491644 is 446194038451.

It is a super-2 number, since 2×154830491644² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 2084082 + ... + 2157094.

It is an arithmetic number, because the mean of its divisors is an integer number (11553370290).

Almost surely, 2^154830491644 is an apocalyptic number.

It is an amenable number.

154830491644 is a deficient number, since it is larger than the sum of its proper divisors (122450395316).

154830491644 is a wasteful number, since it uses less digits than its factorization.

154830491644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85389 (or 85387 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 154830491644 in words is "one hundred fifty-four billion, eight hundred thirty million, four hundred ninety-one thousand, six hundred forty-four".